Questions on Algebra: Equations answered by real tutors!

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Question 250442: solve equation
3/4x + 345 = x
Click here to see answer by edjones(8007)

Question 250480: whAT IS THE INVERSE OF THE ONE TO ONE FUNCTION f(X)= 6X-7 DIVIDED BY 5
Click here to see answer by Theo(13342)

Question 250482: A company that produces bikes has costs given by function C(x)=25x +20,000 where x is the number of bikes manufactured and C(x) is measured in dollars. The avg cost to manufacture each bike is given (a line over the c) C(x)=25x +20,000 divided by x. find c (250) round to nearest dollar
Click here to see answer by Theo(13342)

Question 250476: 24x^-5y^3z^-8/-3^-2y^5z^-9

Click here to see answer by MRperkins(300)

Question 250474: (x^2+2x+3)(x+5)
Click here to see answer by MRperkins(300)

Question 250605: Evaluate the logarithmic equation for three values of x that are greater than -3, three values of x that are between -4 and -3, and at x = -3. Show your work. Use the resulting ordered pairs to plot the graph; submit the . State the equation of the line asymptotic to the graph (if any). Please help solve and I will graph it.
y = -log4 (x + 4)
Click here to see answer by solver91311(24713)

Question 250614: Solve the problem.
The sales of a mature product (one which has passed its peak) are given by the function S(t) = S0e^(-at), where t is time in years. Find the sales after 19 years if a = 0.12 and S0 = 99,300
Click here to see answer by richwmiller(17219)

Question 250711: Jill is 13.5 kilometers away from Joe. Both begin to walk toward each other at the same time. Jill walks at 3 kilometers per hour. The meet in 3 hours. How fast is Joe walking?
Click here to see answer by ankor@dixie-net.com(22740)

Question 250893: x(4x-35)=45
Click here to see answer by dabanfield(803)

Question 250899: solve 4y-9=15
Click here to see answer by tutorcecilia(2152)

Question 250889: x^2-2x=35
Click here to see answer by tutorcecilia(2152)

Question 250937: solving using the substitution method
8x-2y=32
6x+28=y
what is the solution of the system
Click here to see answer by MRperkins(300)

Question 250938: solve by the substitution method
3m+n=13
m-2n=23
what is the solution of the system
Click here to see answer by actuary(112)

Question 250970: I have one problem that i need help with I solve the problem but not sure of the graph, can you show me how to graph.
Here is the problem:
1. Evaluate the exponential equation for three values of x greater than -4, three values of x smaller than -4, and at x=--4. Use the resulting ordered pairs to plot the graph, state the equation of the line asymptotic to the graph. Y= 3(x+4).
This is what I got.
Start with the given equation
4y= -3x Subtract 3x from both sides
4y=-3x Rearrange the equation
Divide both sides by
Break up the fraction
y= (-3/4)*x Reduce
Now graph y= (-3/4)*x
So let's solve for y on the second equation
Start with the given equation
y=-x subtract x from both sides
y= -x Rearrange the equation

Divide both sides by
Break up the fraction
y=0x Reduce
Reduce
Now lets add the graph of y=0x to our first plot to get:
From the graph, we can see that the two lines intersect at the point
Start with the given equation
y=-x Subtract x from both sides
y=-x Rearrange the equation
Divide both sides by
Break up the fraction
Y=0x Reduce
Now lets add the graph of to our first plot to get:
Can you check this for me.
Thank you
Click here to see answer by Theo(13342)

Question 250894: 36x^3-12x^2-3x=0
Click here to see answer by Fombitz(32388)

Question 250974: 7 2/5 % of x is equal to 74. Solve for x.
Click here to see answer by vksarvepalli(154)

Question 250986: Hello,
I am having problem solving the following:
Can you help me please.
Evaluate the logarithmic equation for three values of x that are greater than -1, three values of x that are between 0 and -1 and at x = -1 use the resulting ordered pairs to plot the graph. State the equation of the line asymptotic of the graph. Y=log1/7 (x+2)
Please Help me.
Thank you
Click here to see answer by stanbon(75887)

Question 251035: This equation has fractions as well as parentheses... I am on a computer, so the fractions will look like this 5/4 and 5/2... those are fractions...
Problem # 1. 8( 2 - 5/4x) - 6 ( 5/2 - 3x)
Please help me solve this- I am lost... Also need help with two more fractional equations.
Problem # 2. t/-5 = -2 The t/-5 is a fraction.
problem # 3. 5y/3 - 5 = y/4 + y The 5y/3, and y/4 are fractions.
Please help me.. I need this solved as soon as possible. Thank you.
Click here to see answer by richwmiller(17219)

Question 251029: Find the logarithm using the change-of-base formula. Round to the nearest ten-thousandth. the n should be lower than the g in log thanks
log π 1500
Click here to see answer by solver91311(24713)

Question 251055: Solve for x
3x/x-1 - 13/2x-2 = 10
Click here to see answer by MTM 606(1)

Question 251090: 30y to the fourth power divided by -5y to the second power

Click here to see answer by dabanfield(803)

Question 251090: 30y to the fourth power divided by -5y to the second power

Click here to see answer by Fombitz(32388)

Question 251142: 9-4(7x-8x)=x-3
how does x = -4
i don't understand how to get to the answer
Click here to see answer by Edwin McCravy(20055)

Question 251142: 9-4(7x-8x)=x-3
how does x = -4
i don't understand how to get to the answer
Click here to see answer by JimboP1977(311)

Question 251141: 9x-4(7x-8x)=x-3
how does x = -4
i don't understand how to get to the answer
Click here to see answer by College Student(505)

Question 251244: What is the answer to this?
y=(1.023*-(a))-(1.023*b)
Click here to see answer by stanbon(75887)

Question 251324: 5.5/20%=?

Click here to see answer by stanbon(75887)

Question 251323: 3/16=(?)% x 3/4
I need to see work on this one please. Thank you in advance for your help.
Click here to see answer by richwmiller(17219)

Question 251346: Express 4/20 as a decimal
Thanks in advance for your help!
Click here to see answer by richwmiller(17219)

Question 251377: 9. Find the x-intercept and the y-intercept for the equation y = -�x + 3.
Click here to see answer by solver91311(24713)

Question 251376: 5. Write the equation of the line containing the points (-4, 1) and (5, 2).
Click here to see answer by jim_thompson5910(35256)

Question 251408: x/16 + 3x/8 = x/12
Click here to see answer by stanbon(75887)

Question 251407: 4+ 27/a-9 = 3a/a-9
Click here to see answer by stanbon(75887)

Question 251506: a#b#c=2a-3b+5c
Click here to see answer by richwmiller(17219)

Question 251113: Can you please help me with this equation??? & can you please do it step by step??
10 log^(x+2) = 4^2
Click here to see answer by ankor@dixie-net.com(22740)

Question 251635: 7x+9y=42
-9x+y=34
Click here to see answer by richwmiller(17219)

Question 251706: There are 42 houses available. Floor plan 1 is worth 100,000 and Floor plan 2 is worth 150,000. All 42 houses together are worth 6,000,000. How many of each floor plan is available?
Click here to see answer by edjones(8007)

Question 251751: 8x + 10x =144. x=
Click here to see answer by jim_thompson5910(35256)

Question 251816: Solve for the variable.
2(X-1)+3X=6X-20
keainc74@aol.com
Click here to see answer by jim_thompson5910(35256)

Question 251812: by increasing the cost of entry ticket to a fair in the ratio 10:13, the number of visitors to the fair has decreased in the ratio 6:5 in what ratio has the total collection increased or decreased
Click here to see answer by ankor@dixie-net.com(22740)

Question 251828: Can somebody help me find x:
Click here to see answer by jim_thompson5910(35256)

Question 251835: one can juice drink is 25% orange juice another is 10% orange juice how many liters of each should be mixed together in order to get 15 liters that is 21% orange juice?

Click here to see answer by richwmiller(17219)

Question 251892: The sum of the integers from 1 to n is n(n+1) over 2. The sum of the squares of the integers from 1 through n is n(n+1)(2n+1) over 6 . The sum of the cubes of the integers from 1 through n is n^2(n+1)^2 over 4 . Use the appropriate expressions to find the following values.
B. The sum of the squares from 1 through 30.
C. The sum of the cubes of the integers from 1 through 30.
D. The square of the sum of the integers from 1 through 30.
e. The cube of the sum of the integers from 1 through 30.
my answers
B. 620.16
c.216,225
D. not really sure how to get started
e. not really sure how to get started
Click here to see answer by solver91311(24713)

Question 251912: What is the solution for v-4(4-v)=-2(2v-1)?
Click here to see answer by jim_thompson5910(35256)

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