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

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Question 1064333: if there is a function f and we know that f''(x)<>0 (f''(x) is not equal to 0) what does it mean for the f'(x) ?? (12th form student from Greece)
Click here to see answer by ikleyn(52794)

Question 1064483: You are selling banana bread that costs P 5 each. Each week, you have 50
customers. When you decrease the price by P1, you expect 30 customers to be
added. What is the price of the banana bread that yields a maximum profit?
c. If the revenue (R) = number of customers � bread price. Write the
equation of the quadratic function given the situation above?

how did you get the letter c in question 916733?

Click here to see answer by Edwin McCravy(20056)

Question 1064491: Kensington charges $20 per hour (h) teaching music lessons. Last year,
Kensington earned $37,705, including tips (t ). Given this information,
which of the following equations can be used to find the amount
Kensington made in tips last year?
A. t = 37705 + 20h
B. t = 37705 - 20h
C. t = 37705h + 20
D. t = 37705h - 20
Click here to see answer by Boreal(15235)

Question 1064150: So Sorry, Perhaps I should write it correctly.
Find the value for the function:-3x+5/7x+4
Find f(x+h) when F(x)=
A. -3x-3h+5 / 7x+7h+4
B. -3x+2h / 7x+11h
C. -3x+5h / 7x+4h
D. -3x-3h+5 / 7x+4
Click here to see answer by Fombitz(32388)

Question 1064656: Find the inverse function of g(x) g(x)=(7x+18)/2
Click here to see answer by josgarithmetic(39618)

Question 1064780: Find The Domain Of Fx, F(x)=5xpower2+2
Click here to see answer by Fombitz(32388)

Question 1064875: The product of two numbers is 20. If one of the numbers is 8/13 what is the other number?
Click here to see answer by stanbon(75887)

Question 1064875: The product of two numbers is 20. If one of the numbers is 8/13 what is the other number?
Click here to see answer by Alan3354(69443)

Question 1064909: If , find .
Click here to see answer by jim_thompson5910(35256)

Question 1064866: sqrt(1-x^(4))+(2x+1)/(3x-2)
Click here to see answer by Alan3354(69443)

Question 1065053: You invest $10000 in Rapid Growth Funds, which appreciate by 2% per year, with yields reinvested quarterly. By how much will you investment have grown after 5 years?
Click here to see answer by addingup(3677)

Question 1065078: Consider a square with side of length s, diagonal of length d, perimeter P and area A. Write P as a function of s in simplified form.
Click here to see answer by josgarithmetic(39618)

Question 1065101: Hi, i have to find the domain here : g(x) = log7(2/3x -1)
thanks for your help
Click here to see answer by josmiceli(19441)

Question 1065190: Hello.
I have the question of Given the following functions, find each of the values:
f(x)=−49
g(x)=x+7
(f+g)(-1)=
(f-g)(-2)=
(f*g)(-5)=
(f/g)(2)=

In order, I answered the following:
-53.9 (incorrect)
-39 (incorrect)
-49x+1715 (Incorrect)
(-49)/(x+7)(incorrect).
Any assistance on what I did wrong is appreciated. Thanks!
Click here to see answer by rothauserc(4718)

Question 1065144: If f(x-2) = 2x-5, then what is f(x)?
Click here to see answer by josgarithmetic(39618)

Question 1065319: If r(x)=2x^2-5x+1 find r(a^2)
Click here to see answer by josgarithmetic(39618)

Question 1065379: find the domain and range of -7x^2-8x+2
Click here to see answer by Boreal(15235)

Question 1065490: Show me the steps to find the value of this function
f(3)-9=5x^2+4x

Click here to see answer by ikleyn(52794)

Question 1065420: Find the value for each function:
(A) f(1)
(B) f(1)
(C)f(-1)
(D) f(3)
f(x)= x / x^2+1
(The "/" is the over sign)
Click here to see answer by Fombitz(32388)

Question 1065418: Find the value for each function:
(A) f(1)
(B) f(1)
(C)f(-1)
(D) f(3)
f(X) = -3x^2+2x-4
Click here to see answer by Boreal(15235)

Question 1065645: f(x)=1/(x-4) g(x)=4x+9
find (f o g)(5)=?
(f o g)(x)=?
Click here to see answer by Edwin McCravy(20056)

Question 1065655: Find the real solutions of the equation 2x4 - 128x2 = 0 by factoring.

Click here to see answer by rothauserc(4718)

Question 1061301: Determine algebraically whether the function is even, odd, or neither.
f(x) = 2x^3
a. even
b. odd
c. neither

Click here to see answer by Fombitz(32388)

Question 1065721: My numerator is (4b-1)(4b+1) and the denominator is (2b-1)(b+6) how do I factor out my denominator to find the domain making sure I exclude the values equal to zero
Click here to see answer by Alan3354(69443)

Question 1065771: c^2+2c-10/10c^2-80c+160 is a rational expression need help factoring completely and finding the domain
Click here to see answer by Theo(13342)

Question 1061299: Answer the question about the given function.
Given the function f(x) = x^2-8 / x-3 , if x = -2, what is f(x)? What point is on the graph of f?
a. 4 / 5 ; (4 / 5, -2)
b. -12 / 5 ; (-2, -12 / 5)
c. -12 / 5 ; (-12 / 5 , -2)
d. 4 / 5 ; (-2, 4 / 5)

Click here to see answer by pmcneil20(1)

Question 1065796: An international food festival charges admission and for each sample of food. Admission and 4 samples of food cost $6.25. Admission and 7 samples of food cost $9.25. Write a linear function rule to model the cost y for any number of samples x.
Click here to see answer by josgarithmetic(39618)

Question 1065830: A factory can produce two products, x and y, with a profit approximated by P=14x + 24y - 900. The production of y must exceed te production of x by at least 100 units. Moreover, production levels are limited by the formula x+2y≤1400.
a. Identify the vertices of the feasible region.
b. What production levels yield the maximum profit, and what is the maximum profit?
Click here to see answer by Fombitz(32388)

Question 1065982: What is the maximum value of f(x) = -2x^2 - 4x + 3?
Please explain. Thank youuu.
Click here to see answer by Alan3354(69443)

Question 1065977: If F = { (1,2), (3, 5), (4,7)} and G = { (1,4), (3,0), and (5, 2)}, what is F + G? What is G/F (using arithmetic function)?

Click here to see answer by Edwin McCravy(20056)

Question 1066026: use the limit definition if the derivative to find a formula for f'(x) for f(x)=1/x
Explain how to start on this
Click here to see answer by Boreal(15235)

Question 1066040: does the equation x^2 + y^2= 144 define y as a function of x?
Click here to see answer by Boreal(15235)

Question 1066043: 1) f(-x) = 2(-x) + 1 (simplify)
2) f(x+8) = 2(x+8) + 1 (simplify)
3) f(x)= x^5 + x^3 (determine if odd,even, or neither)

Click here to see answer by stanbon(75887)

Question 1065865: Suppose that the functions h and g are defined as follows
h(x)=(-3+x)(3+x)
g(x)=2-6x
find (h/g)(-6)
find all values that are not in the domain of h/g
Click here to see answer by Fombitz(32388)

Question 1066120: A car moving at a constant speed passed a timing device at t=0. After 9 seconds, the car has traveled 999 feet. Write a linear function rule to model the distance in feet d the car has traveled any number of seconds t after passing the timing device. (write an equation with d and t.)
Click here to see answer by Alan3354(69443)

Question 1066182: Find x so the distance between (x,2) and (2x+1,5) is 5

Click here to see answer by Boreal(15235)

Question 1066182: Find x so the distance between (x,2) and (2x+1,5) is 5

Click here to see answer by MathTherapy(10552)

Question 1066192: Given g(x)=2x^2-x+1
find g(x+h)
Ive set it up g(x+h)=2(x+h)^2-(x+h)+1
and so far I have 2x^2 and then I don't know the rest.
Please Help
Click here to see answer by josgarithmetic(39618)

Question 1066252: find the domain an range of f:x=x/1-x
Click here to see answer by Boreal(15235)

Question 1066374: give the equation of a circle with a diameter that has endpoints (-8,9) and (-6,8)

Click here to see answer by josgarithmetic(39618)

Question 1066439: A linear function models the height of a burning candle. Candle A comes out of the mold at 220 mm and is expected to be at 196 mm after 4 hours of burning. The model for candle B is h=290 - 5t, where h is the height in millimeters and t is the time in hours. What are the initial values for each candle?
Click here to see answer by Boreal(15235)

Question 1066423: Find the difference quotient f(x+h)-f(x)/h, where h cannot be equal to 0 , for the function below.
f(x)=1/x+9
Simplify your answer as much as possible.

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