Questions on Algebra: Functions, Domain, NOT graphing answered by real tutors!

Tutors Answer Your Questions about Functions (FREE)

Question 62700: The Randolphs used 12 more gal of fuel oil in October
than in September and twice as much oil in November as in September. If they
used 132 gal for the 3 months, how much was used during each month?

Click here to see answer by checkley71(8403)

Question 62698: Yuri has a board that is 98 in. long. He wishes to cut the board into two
pieces so that one piece will be 10 in. longer than the other. What should the length
of each piece be?
Click here to see answer by joyofmath(189)

Question 62735: If the inventor in Exercise 53 charges $4 per unit, then her profit for producing and selling x units is given by the function:
P(x) = 2.25x � 7000
a. What is her profit if she sells 2000 units?
b. What is her profit if she sells 5000 units?
c. What is the break-even point for sales?

Click here to see answer by 303795(602)

Question 62742: help please! Let f(x)=x+2
write the function f(x)= |x+2| as a composition of the functions f and g.
Click here to see answer by funmath(2933)

Question 62686: 3/7x=15
Click here to see answer by jai_kos(139)

Question 62682: 12x _ 6 _ 11x
Click here to see answer by checkley71(8403)

Question 62684: 5x _ 8 _ 3x _ x _ 5 _ 6x _ 3
Click here to see answer by checkley71(8403)

Question 62799: 6x -1 2x = 3
5 3
Click here to see answer by checkley71(8403)

Question 62691: _4(2x _ 3)__8x _ 5
Click here to see answer by checkley71(8403)

Question 62851: I need some help with this one...can anyone help me out? Thanks!
Directions: Let the function f be defined by y = f(x), where x and f(x) are real numbers. Find f(2), f(-3).
f(x) = 3/x^2+3
Thank you!
Click here to see answer by praseenakos@yahoo.com(507)

Question 62926: How do you figure out the domain for x=y+1 for x={-2,-1,0,1,2}
Click here to see answer by venugopalramana(3286)

Question 63004: There are 850 Douglas fir and ponderosa pine trees in a
section of forest bought by Sawz Logging Co. The company paid an average of
$300 for each Douglas fir and $225 for each ponderosa pine. If the company paid
$217,500 for the trees, how many of each kind did the company buy?
Click here to see answer by stanbon(75887)

Question 63009: Ms. Jordan has been given a loan of $2500 for 1 year. If
the interest charged is $275, what is the interest rate on the loan?
Click here to see answer by stanbon(75887)

Question 63008: A chemist has 300 milliliters (mL) of solution that is 18%
acid. How many milliliters of acid are in the solution?
Click here to see answer by stanbon(75887)

Question 63007: Paul invested $5000 in a time deposit. What interest will
he earn for 1 year if the interest rate is 6.5%?
Click here to see answer by stanbon(75887)

Question 63023: please help me with the following :
Find the distance between (-2,3) and (4,5)
Click here to see answer by praseenakos@yahoo.com(507)

Question 62993: 2(x - 3) - 3(x + 5) = 3(x - 2) - 7
Click here to see answer by terbear1963(43)

Question 62998: The length of a rectangular playing field is 5 ft less than twice its width.
If the perimeter of the playing field is 230 ft, find the length and width of the field.
Click here to see answer by checkley71(8403)

Question 62999: A bicyclist rode into the country for 5 h. In returning, her
speed was 5 mi/h faster and the trip took 4 h. What was her speed each way?
Click here to see answer by ankor@dixie-net.com(22740)

Question 63001: Martina leaves home at 9 A.M., bicycling at a rate of
24 mi/h. Two hours later, John leaves, driving at the rate of 48 mi/h. At what time
will John catch up with Martina?
Click here to see answer by ankor@dixie-net.com(22740)

Question 63096: Find the inverse of the function f(x)= 4/x+7, what is the range of f(x)?
Click here to see answer by uma(370)

Question 63101: a)determine whether the graph 0f 5x^2 -3y=4 is symmetric with respect to the y axis
b)determine whether the function f(x)= x^4 +x^2+3 is even odd or neither
c)Write an equation for a function that has a graph with the shape of y=square root of x but shifted to the right 7 units and up 4 units
thank you so much
Click here to see answer by funmath(2933)

Question 63095: Given f(x)= 6/x+7 and g(x)= 2/x-1 find (fg)(x) and its domain
Click here to see answer by funmath(2933)

Question 62996: 3x - 5(3x - 7) = 2(x + 9) + 45
Click here to see answer by funmath(2933)

Question 63121: EVALUATE THE FUNCTION WHEN X=2,X=0,X=-2.
g(x)=x+4
Click here to see answer by Nate(3500)

Question 63121: EVALUATE THE FUNCTION WHEN X=2,X=0,X=-2.
g(x)=x+4
Click here to see answer by checkley71(8403)

Question 61981: Write the following phrase using symbols.
The quotient of p minus q, divided by 5
Click here to see answer by joyofmath(189)

Question 63211: The cost for a long-distance telephone call is $0.36 for the
first minute and $0.21 for each additional minute or portion thereof. Write an
inequality representing the number of minutes a person could talk without
exceeding $3.
Click here to see answer by stanbon(75887)

Question 63209: Sam must have an average of 70 or more in his summer course to
obtain a grade of C. His first three test grades were 75, 63, and 68. Write an inequality
representing the score that Sam must get on the last test to get a C grade.
Click here to see answer by stanbon(75887)

Question 63207: 2 times a number, increased by 28, is less than or equal to 6 times that number.
Click here to see answer by Cintchr(481)

Question 63205: 7(x - 3) > 5x - 14
Click here to see answer by Cintchr(481)

Question 63202: If the total bill at a restaurant, including a 15% tip, is
$65.32, what was the cost of the meal alone?
Click here to see answer by Cintchr(481)

Question 63201: If the total bill at a restaurant, including a 15% tip, is
$65.32, what was the cost of the meal alone?
Click here to see answer by Cintchr(481)

Question 63350: 3x > 2x � 4
Click here to see answer by stanbon(75887)

Question 63347: The electricity costs of a business decreased from $12,000
one year to $10,920 the next. What is the rate of decrease?

Click here to see answer by checkley71(8403)

Question 63351: A bus leaves a station at 1 P.M., traveling west at an average
rate of 44 mi/h. One hour later a second bus leaves the same station, traveling
east at a rate of 48 mi/h. At what time will the two buses be 274 mi apart?

Click here to see answer by checkley71(8403)

Question 63386: Find the domain of f(x)=(3x^2 - 2x + 1)/(x^2 + 9)
Click here to see answer by fomunearantess@yahoo.com(2)

Question 63364: Please help with the following problem: Rewrite the equation so y is a function of x... 1+7y=5x-2
Click here to see answer by ankor@dixie-net.com(22740)

Question 63434: How do I find the slope of f(2)=-3,f(-2)=5
Click here to see answer by uma(370)

Question 63450: Is 4 a solution to the equation x + 7 = 11?
Click here to see answer by stanbon(75887)

Question 63465: Multiply. (�2.5)(20)
Click here to see answer by checkley71(8403)

Question 63466: Add. 4/5 + 1/10
Click here to see answer by checkley71(8403)

Question 63462: Solve. 6(2 � x) = 4x
Click here to see answer by checkley71(8403)

Question 63460: Translate the following statement into an algebraic equaion. Let x represent the number.
6 times a number is 14 more than that number.

Click here to see answer by checkley71(8403)

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