Questions on Algebra: Equations answered by real tutors!

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Question 1084102: A children's inflatable pool takes 22 minutes to fill with an electrical pump. It takes 52 minutes to let the air out of the pool. If the pool's valve is accifentally left open, how long will it take to fill the pool? I need help understanding by seeing the steps
Click here to see answer by ikleyn(52781)

Question 1084106: If f(x) = 4x2 − x + 2,
find the following:

f(a + 1) =
[f(a)]2 =
f(a + h) =
Click here to see answer by Alan3354(69443)

Question 1084147: Y equals -12 when x = 20 ...not sure what i am being asked to with this
Click here to see answer by josgarithmetic(39617)

Question 1084147: Y equals -12 when x = 20 ...not sure what i am being asked to with this
Click here to see answer by ikleyn(52781)

Question 1084180: What is the answer= 3(x2+7) note x to the 2nd power
Click here to see answer by Theo(13342)

Question 1084207: Given the formula a=bc, rewrite the formula to solve for C.
Click here to see answer by MathLover1(20849)

Question 1084350: Write a function rule for the total cost in dollar of gasoline for$3 per gallon
Click here to see answer by ikleyn(52781)

Question 1084457: for a particular event 784 tickets were sold for a total of $4052. If students paid $4 perticket and nonstudents paid $6 per ticket, how many student tickets were sold?
Click here to see answer by addingup(3677)

Question 1084554: Solve for Y
-6(y+9) = -3y-30
Click here to see answer by Boreal(15235)

Question 1084546: When x does not equal 7, (3x/x^2-49) + (3x/7-x) is equivalent to?
Click here to see answer by Boreal(15235)

Question 1084571: a label printer prints 9 pages of labels in 1.0 seconds. How long will it take to print 468 pages of labels?
Click here to see answer by Boreal(15235)

Question 119949: Can you help me with this problem?
Helen earns $7.60 an hour at her job, but if she works more than 35 hours a week she is paid 1 1/2 times her regular salary for the overtime hours worked. One week, her gross pay was $380.00. How many overtime hours did she work that week?
Click here to see answer by adamhen894(15)

Question 1084641: Solve 5^(x+2) = 101 for x, correct to three significant figures.
Click here to see answer by Edwin McCravy(20055)

Question 1084653: what is this kind of equation ? 2s+3t=7
Click here to see answer by jim_thompson5910(35256)

Question 1084651: Solve the following by factoring, please show work
2x^=x+6
Click here to see answer by Alan3354(69443)

Question 1084655: solve the following by using the quadratic formula(to one decimal place)
4x^2=12x-9
Click here to see answer by Theo(13342)

Question 1084637: Solve f(x) = x - xlog^2x and if possible draw me a graph of the function.
Click here to see answer by Fombitz(32388)

Question 1084671: The annual fixed costs of owning a small sedan are $4458, assuming the car is completely paid for. The cost to drive the car is approximately $0.15 per mile. Write a linear equation that relates the cost C and the number x of miles driven annually.
C=
(Use integers or decimals for any numbers in the expression. Do not include the $ symbol in your answer.)
Click here to see answer by rfer(16322)

Question 1084652: Solve the following by factoring, please show work.
3/4x^= 4/3
Click here to see answer by Fombitz(32388)

Question 1084713: Factor each completely.
42r^3−49r^2+18r−21
Click here to see answer by MathLover1(20849)

Question 1084713: Factor each completely.
42r^3−49r^2+18r−21
Click here to see answer by MathTherapy(10552)

Question 1084673: A truck rental company rents a moving truck for one day by charging $33 plus $0.05 per mile. Write a linear equation that relates the cost C, in dollars, of renting the truck to the number x of miles driven. What is the cost of renting the truck if the truck is driven 147 miles? 317 miles?
Type the linear equation that relates the cost C, in dollars, of renting the truck to the number of x miles driven.
C =
(Use integers or decimals for any numbers in the expression. Do not include the $ symbol in your answer.)
Click here to see answer by jorel1380(3719)

Question 1084724: can u help with this 3x -14 = 1
Click here to see answer by MathLover1(20849)

Question 1084724: can u help with this 3x -14 = 1
Click here to see answer by Alan3354(69443)

Question 1084669: An electrical company supplies electricity to residential customers for a monthly customer charge of $6.64 plus 6.048 cents per kilowatt-hour for up to 400 kilowatt-hours.
(a) Write a linear equation that relates the monthly charge C, in dollars, to the number x of kilowatt-hours used in a month, 0 less than or equals x less than or equals 0≤x≤400.
C=
(Use integers or decimals for any numbers in the expression. Do not include the $ symbol in your answer.)
Click here to see answer by jorel1380(3719)

Question 1084727: Hello, Sorry if this has the wrong topic, I wasn't sure which one to choose, the question I am stuck on is;
Rx+Ro= ((Rf-Ri)/Rf)(Rc+Ro)
By multiplying the rhs brackets and collecting terms, show that:
Rx=((Rf-Ri)/Rf)Rc-(RoRi/Rf)
I just can't get my head around it at all, I can't even get started, any help would be greatly appreciated!
Terms are Rx, Rf, Ri, Ro
Click here to see answer by Fombitz(32388)

Question 1084802: Tangerine restaurant charges $350 plus $15 per person. Write an equation to represent total cost charged by tangerine restaurant
Click here to see answer by javane(1)

Question 1084828: Solve the equation. Clear the fractions from the equation in the first step, please show the complete check of your answer.
2a/15-1/3=5a/6-7/30
a=
Click here to see answer by Alan3354(69443)

Question 1084827: Solve the equation. If the equation has a unique solution, please show the complete check of your answer.
6(x-5)+x=7(x-6)+12
x=
Click here to see answer by Alan3354(69443)

Question 1084831: Solve the inequality. Clear the fractions from the equation in the first step, write your answer in interval notation.
4/3-X<1/6x+11/3
x:
Click here to see answer by Fombitz(32388)

Question 1084826: Solve the equation. If the equation has a unique solution, please show the complete check of your answer.
4(7-8x)-5=-5(5x+1)
x=
Click here to see answer by Fombitz(32388)

Question 1084829: Solve the inequality. Write your answer in interval notation.
3(4m-3)>2(1-m)+3
m:

Click here to see answer by Alan3354(69443)

Question 1084871: Marcus is working on his dragster. He knows that the time needed for the car to go from 0 to 100 miles per hour varies inversely with the cars horsepower, the car can go from 0 to 100mph in 10seconds. How long should the car take to go from 0 to 100 if he can increase the horsepower to 250hp?
Click here to see answer by ankor@dixie-net.com(22740)

Question 1084958: Given the two linear equations determine whether the lines are parallel, perpendicular, or neither.
6x+7y=42
7x=16+6y
The lines are
Click here to see answer by Fombitz(32388)

Question 1084956: Find an equation of the line through (-6,10) parallel to the line with equation 3x-7y=14. Write the new equation in point slope form.
Y=
Click here to see answer by Cromlix(4381)

Question 1084959: Given the linear equation 5x-2y=10
Convert the equation to slope intercept form. State the slope of the line and the y intercept as an ordered pair.
m=
y intercept =
Use the slope and the y intercept to graph the line represented by the equation. Use a graphing grid to present a graph.
Click here to see answer by MathLover1(20849)

Question 1084949: The equation of the graphed line in slope-point form using the point (2, -1) is , and its equation in slope-intercept form is
Click here to see answer by Fombitz(32388)

Question 1084992: Show how you solve the following two equations x/8=12
x/2.4=4.2
Click here to see answer by MathLover1(20849)

Question 1084991: Explain how opposites are applied when solving one-step equations. How do you know what to use to solve a one-step equation? Be specific and complete.

Click here to see answer by Theo(13342)

Question 1084985: Show how you solve the following two equations:
6x = 33
2/3x=8/15
Click here to see answer by Alan3354(69443)

Question 1084984: Show how you solve the following two equations:
x + 3 = 18
x + 3/4 = 2 1/4.
Click here to see answer by Alan3354(69443)

Question 1085089: 2 integers have a sum of 35. The sum of their squares is 637. Find the numbers.
Click here to see answer by Fombitz(32388)

Question 1085089: 2 integers have a sum of 35. The sum of their squares is 637. Find the numbers.
Click here to see answer by MathLover1(20849)

Question 1085089: 2 integers have a sum of 35. The sum of their squares is 637. Find the numbers.
Click here to see answer by Alan3354(69443)

Question 1085096: The amount of pollution varies directly with the population of a city. City A has a population of 442,000 people and produces 260,000 tons of pollution. How much pollution should we expect City B to produce if its population is 344,000 people? Round answer to the nearest whole ton.
City B products _____________ tons of pollution.
Click here to see answer by Boreal(15235)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515, 16516..16560, 16561..16605, 16606..16650, 16651..16695, 16696..16740, 16741..16785, 16786..16830, 16831..16875, 16876..16920, 16921..16965, 16966..17010, 17011..17055, 17056..17100, 17101..17145, 17146..17190, 17191..17235, 17236..17280, 17281..17325, 17326..17370, 17371..17415, 17416..17460, 17461..17505, 17506..17550, 17551..17595, 17596..17640, 17641..17685, 17686..17730, 17731..17775, 17776..17820, 17821..17865, 17866..17910, 17911..17955, 17956..18000, 18001..18045, 18046..18090, 18091..18135, 18136..18180, 18181..18225, 18226..18270, 18271..18315, 18316..18360, 18361..18405, 18406..18450, 18451..18495, 18496..18540, 18541..18585, 18586..18630, 18631..18675, 18676..18720, 18721..18765, 18766..18810, 18811..18855, 18856..18900, 18901..18945, 18946..18990, 18991..19035, 19036..19080, 19081..19125, 19126..19170, 19171..19215, 19216..19260, 19261..19305, 19306..19350, 19351..19395, 19396..19440, 19441..19485, 19486..19530, 19531..19575, 19576..19620, 19621..19665, 19666..19710, 19711..19755, 19756..19800, 19801..19845, 19846..19890, 19891..19935, 19936..19980, 19981..20025, 20026..20070, 20071..20115, 20116..20160, 20161..20205, 20206..20250, 20251..20295, 20296..20340, 20341..20385, 20386..20430, 20431..20475, 20476..20520, 20521..20565, 20566..20610, 20611..20655, 20656..20700, 20701..20745, 20746..20790, 20791..20835, 20836..20880, 20881..20925, 20926..20970, 20971..21015, 21016..21060, 21061..21105, 21106..21150, 21151..21195, 21196..21240, 21241..21285, 21286..21330, 21331..21375, 21376..21420, 21421..21465, 21466..21510, 21511..21555, 21556..21600, 21601..21645, 21646..21690, 21691..21735, 21736..21780, 21781..21825, 21826..21870, 21871..21915, 21916..21960, 21961..22005, 22006..22050, 22051..22095, 22096..22140, 22141..22185, 22186..22230, 22231..22275, 22276..22320, 22321..22365, 22366..22410, 22411..22455, 22456..22500, 22501..22545, 22546..22590, 22591..22635, 22636..22680, 22681..22725, 22726..22770, 22771..22815, 22816..22860, 22861..22905, 22906..22950, 22951..22995, 22996..23040, 23041..23085, 23086..23130, 23131..23175, 23176..23220, 23221..23265, 23266..23310, 23311..23355, 23356..23400, 23401..23445, 23446..23490, 23491..23535, 23536..23580, 23581..23625, 23626..23670, 23671..23715, 23716..23760, 23761..23805, 23806..23850, 23851..23895, 23896..23940, 23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650, 25651..25695, 25696..25740, 25741..25785, 25786..25830, 25831..25875, 25876..25920, 25921..25965, 25966..26010, 26011..26055, 26056..26100, 26101..26145, 26146..26190, 26191..26235, 26236..26280, 26281..26325, 26326..26370, 26371..26415, 26416..26460, 26461..26505, 26506..26550, 26551..26595, 26596..26640, 26641..26685, 26686..26730, 26731..26775, 26776..26820, 26821..26865, 26866..26910, 26911..26955, 26956..27000, 27001..27045, 27046..27090, 27091..27135, 27136..27180, 27181..27225, 27226..27270, 27271..27315, 27316..27360, 27361..27405, 27406..27450, 27451..27495, 27496..27540, 27541..27585, 27586..27630, 27631..27675, 27676..27720, 27721..27765, 27766..27810, 27811..27855, 27856..27900, 27901..27945, 27946..27990, 27991..28035, 28036..28080, 28081..28125, 28126..28170, 28171..28215, 28216..28260, 28261..28305, 28306..28350, 28351..28395, 28396..28440, 28441..28485, 28486..28530, 28531..28575, 28576..28620, 28621..28665, 28666..28710, 28711..28755, 28756..28800, 28801..28845, 28846..28890, 28891..28935, 28936..28980, 28981..29025, 29026..29070, 29071..29115, 29116..29160, 29161..29205, 29206..29250, 29251..29295, 29296..29340, 29341..29385, 29386..29430, 29431..29475, 29476..29520, 29521..29565, 29566..29610, 29611..29655, 29656..29700, 29701..29745, 29746..29790, 29791..29835, 29836..29880, 29881..29925, 29926..29970, 29971..30015, 30016..30060, 30061..30105, 30106..30150, 30151..30195, 30196..30240, 30241..30285, 30286..30330, 30331..30375, 30376..30420, 30421..30465, 30466..30510, 30511..30555, 30556..30600, 30601..30645, 30646..30690, 30691..30735, 30736..30780, 30781..30825, 30826..30870, 30871..30915, 30916..30960, 30961..31005, 31006..31050, 31051..31095, 31096..31140, 31141..31185, 31186..31230, 31231..31275, 31276..31320, 31321..31365, 31366..31410, 31411..31455, 31456..31500, 31501..31545, 31546..31590, 31591..31635, 31636..31680, 31681..31725, 31726..31770, 31771..31815, 31816..31860, 31861..31905, 31906..31950, 31951..31995, 31996..32040, 32041..32085, 32086..32130, 32131..32175, 32176..32220, 32221..32265, 32266..32310, 32311..32355, 32356..32400, 32401..32445, 32446..32490, 32491..32535, 32536..32580, 32581..32625, 32626..32670, 32671..32715, 32716..32760, 32761..32805, 32806..32850, 32851..32895, 32896..32940, 32941..32985, 32986..33030, 33031..33075, 33076..33120, 33121..33165, 33166..33210, 33211..33255, 33256..33300, 33301..33345, 33346..33390, 33391..33435, 33436..33480, 33481..33525, 33526..33570, 33571..33615, 33616..33660, 33661..33705, 33706..33750, 33751..33795, 33796..33840, 33841..33885, 33886..33930, 33931..33975, 33976..34020, 34021..34065, 34066..34110, 34111..34155, 34156..34200, 34201..34245, 34246..34290, 34291..34335, 34336..34380, 34381..34425, 34426..34470, 34471..34515, 34516..34560, 34561..34605, 34606..34650, 34651..34695, 34696..34740, 34741..34785, 34786..34830, 34831..34875, 34876..34920, 34921..34965, 34966..35010, 35011..35055, 35056..35100, 35101..35145, 35146..35190, 35191..35235, 35236..35280, 35281..35325, 35326..35370, 35371..35415, 35416..35460, 35461..35505, 35506..35550, 35551..35595, 35596..35640, 35641..35685, 35686..35730, 35731..35775, 35776..35820, 35821..35865, 35866..35910, 35911..35955, 35956..36000, 36001..36045, 36046..36090, 36091..36135, 36136..36180, 36181..36225, 36226..36270, 36271..36315, 36316..36360, 36361..36405, 36406..36450, 36451..36495, 36496..36540, 36541..36585, 36586..36630, 36631..36675, 36676..36720, 36721..36765, 36766..36810, 36811..36855, 36856..36900, 36901..36945, 36946..36990, 36991..37035, 37036..37080, 37081..37125, 37126..37170, 37171..37215, 37216..37260, 37261..37305, 37306..37350, 37351..37395, 37396..37440, 37441..37485, 37486..37530, 37531..37575, 37576..37620, 37621..37665, 37666..37710, 37711..37755, 37756..37800, 37801..37845, 37846..37890, 37891..37935, 37936..37980, 37981..38025, 38026..38070, 38071..38115, 38116..38160, 38161..38205, 38206..38250, 38251..38295, 38296..38340, 38341..38385, 38386..38430, 38431..38475, 38476..38520, 38521..38565, 38566..38610, 38611..38655, 38656..38700, 38701..38745, 38746..38790, 38791..38835, 38836..38880, 38881..38925, 38926..38970, 38971..39015, 39016..39060, 39061..39105, 39106..39150, 39151..39195, 39196..39240, 39241..39285, 39286..39330, 39331..39375, 39376..39420, 39421..39465, 39466..39510, 39511..39555, 39556..39600, 39601..39645, 39646..39690, 39691..39735, 39736..39780, 39781..39825, 39826..39870, 39871..39915, 39916..39960, 39961..40005, 40006..40050, 40051..40095, 40096..40140, 40141..40185, 40186..40230, 40231..40275, 40276..40320, 40321..40365, 40366..40410, 40411..40455, 40456..40500, 40501..40545, 40546..40590, 40591..40635, 40636..40680, 40681..40725, 40726..40770, 40771..40815, 40816..40860, 40861..40905, 40906..40950, 40951..40995, 40996..41040, 41041..41085, 41086..41130, 41131..41175, 41176..41220, 41221..41265, 41266..41310, 41311..41355, 41356..41400, 41401..41445, 41446..41490, 41491..41535, 41536..41580