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

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 Algebra: Functions, Domain, NOT graphing Solvers Lessons Answers archive Quiz In Depth

 Question 389005: 5r - 9s = -37 9r + 5s = 103 solve using elimination method Click here to see answer by haileytucki(390)

 Question 389003: 5/2x + 1/4x = 11/4 + x solve for x Click here to see answer by haileytucki(390)

 Question 389135: Use the Factor Theorem to determine whether x-3 is a factor of P(x) = 2x^4-5x^3+2x-33 . Specifically, evaluate P at the proper value, and then determine whether x-3 is a factor. Click here to see answer by Alan3354(31518)

 Question 389253: Let f(x) = x2 – 3x – 7. Find f(–3). THE X2 IS X SQUARED Click here to see answer by richard1234(5390)

 Question 389281: Let the function f be defined by the equation y = f(x), where x and f(x) are real numbers. Find the domain of the function. f(x)= sqrt of x^2-64 (the sqrt is of the x^2-64 not just the x^2) Click here to see answer by richard1234(5390)

 Question 389522: For the function f(x)=(x^4-625)/((x^2-25)(x+5)(x^2+25)) a) How do you find the holes in a function? b) Identify any vertical asymptotes c) Identify any holes Click here to see answer by robertb(4012)

 Question 389527: What is the slant asymptote for the function f(x)=(3x^2-4x+3)/(x+2)? Click here to see answer by robertb(4012)
 Question 389527: What is the slant asymptote for the function f(x)=(3x^2-4x+3)/(x+2)? Click here to see answer by Edwin McCravy(8999)

 Question 389526: This is a question I stumbled accross in my rational functions homework: How would you know if there is a slant asymptote? Click here to see answer by robertb(4012)

 Question 389525: For the function f(x)=(x^2+x-6)/(x^2+2x-8) a) Find the factored form b) Find any vertical asymptotes c) Find any holes d) Find the intercepts e) Find the horizontal asymptote Click here to see answer by haileytucki(390)
 Question 389525: For the function f(x)=(x^2+x-6)/(x^2+2x-8) a) Find the factored form b) Find any vertical asymptotes c) Find any holes d) Find the intercepts e) Find the horizontal asymptote Click here to see answer by robertb(4012)

 Question 389524: For the function f(x)=(x+4)/(x^2-16) a) Find the factored form b) Find any vertical asymptotes c) Find any holes d) Find the intercepts e) Find the horizontal asymptote Click here to see answer by lwsshak3(6756)

 Question 389553: Hello.... I have a seemingly straight forward function problem, however the solution provided is unclear to me. Given F[X] = 1/x-1 [square root of].find f[x]-f[2] over x-2. My solution is [1/x-1[sq.rt]-1]over x-2 Click here to see answer by Alan3354(31518)

 Question 389654: This involves solving an equation by factoring: If g(x) = 4x - 17 and f(x) = 2x^2 + x + 1 What is 2f(-4) * g(6)? Here is my work: f(-4) = 2 (-4)^2 + -4 + 1 = 29 f(-4) = 2 (-4)^2 + -4 + 1 = 29 = 2 * 29 = 58 g(6) = 4(6) - 17 = 7 58 * 7 = 406 [My answer is 406.] I did this work all by myself. I simply need someone to check my work and my answer. I am unsure whether I did this correctly. Click here to see answer by haileytucki(390)

 Question 389636: For the function f(x)= (2x^3+3x-5)/(x^2+x-30) a) The slant asymptote is __________ b) The vertical asymptotes are __________ Click here to see answer by haileytucki(390)

 Question 389690: Without graphing, find the domain of the following functions: a), and b). Click here to see answer by josmiceli(9817)
 Question 389690: Without graphing, find the domain of the following functions: a), and b). Click here to see answer by robertb(4012)

 Question 389762: I am having trouble solving by factoring. Here is the problem, my work and my solution. I need help in checking my work. If f(x) = x - 6 and g(x) = x^2 + 1, then what is g(f(x))? My work and answer: f(x) = x - 6 g(x - 6) = (x - 6)^2 + 1 = x^2 + 36 + 1 = x^2 + 37 [this is my answer, but I am not sure if this is correct.] Thanks for any help you can provide, and I need a sounding board and a check. Click here to see answer by scott8148(6628)

 Question 389763: I am trying to solve by factoring, and I do not know if I am doing this correctly. Here is my work and answer: If f(x) = 20x and g(x) = x - 4, what is g(g(f(3))? f(3) = 20(3) g(60) = 60 - 4 g(56) = 56 - 4 = 52 [this is my answer, but I need someone to check the answer and walk me through the solution.] Thanks in advance for any assistance. Click here to see answer by stanbon(57967)

 Question 389771: I need someone to check my work on solving a function by factoring. Here is the problem and my work: If g(x) = 4x - 17, then what is g(10x)? g(10x) = 4x - 17 = 4(10x) - 17 g = 40x - 17 [this is my answer, but I need someone to check it and confirm whether it is correct.] Thanks for the help. Click here to see answer by jim_thompson5910(28715)

 Question 390007: What is the domain and range if there is a closed circle at (-4,4) and a open circle at (3,-5)points are connected thanks Click here to see answer by user_dude2008(1861)

 Question 390073: i don't know if this is the right catagorie..^ but my question is: how would you solve this equation: a+5=-5a+5 Click here to see answer by jim_thompson5910(28715)
 Question 390073: i don't know if this is the right catagorie..^ but my question is: how would you solve this equation: a+5=-5a+5 Click here to see answer by stanbon(57967)
 Question 390073: i don't know if this is the right catagorie..^ but my question is: how would you solve this equation: a+5=-5a+5 Click here to see answer by unlockmath(1614)
 Question 390073: i don't know if this is the right catagorie..^ but my question is: how would you solve this equation: a+5=-5a+5 Click here to see answer by MathLover1(6812)

 Question 390152: For the function f(x)=(2x^3+3x-5)/(x^2+x-30) a) Find the slant asymptote b) Find the vertical asymptotes Click here to see answer by robertb(4012)

 Question 390222: f(x)=√(x-4)Find the intercepts From what I can tell I think its (0,-4) with no y intercept is this correct and could you show your workings thankyou Click here to see answer by stanbon(57967)

 Question 390372: 13 - 51 15 - 49 22 - 42 33 - 31 36 - 28 Input / output .. I need the Rule here thanks I am stuck Click here to see answer by jerryguo41(162)
 Question 390372: 13 - 51 15 - 49 22 - 42 33 - 31 36 - 28 Input / output .. I need the Rule here thanks I am stuck Click here to see answer by stanbon(57967)

 Question 390648: Which of the following is NOT a function? A. {(4,0), (0,-1), (2,0), (1,1), (3,0)} B. {(1,3), (2,3), (3,6), (4,6), (5,8)} C. {(3,1), (3,2), (6,3), (6,4), (8,5)} D. {(6,4), (7,6), (8,4), (9,6), (5,4)} Click here to see answer by stanbon(57967)