# 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 359067: Find (fog)(x) when g(x) = 3/(x - 1), f(x) = (x - 1)/(x - 3) I really need some help Click here to see answer by Fombitz(13828)
 Question 359067: Find (fog)(x) when g(x) = 3/(x - 1), f(x) = (x - 1)/(x - 3) I really need some help Click here to see answer by ewatrrr(10682)

 Question 359152: Multiply x^2 - 2x / 2x^2 + x -15 X 2x^2 - x -10 / x^2 - 4 Click here to see answer by Fombitz(13828)

 Question 359151: If a linear function f satisfies the conditions : f ( -3 ) = - 2 and f ( 3 ) = 16 , find f ( x ). Click here to see answer by user_dude2008(1861)
 Question 359151: If a linear function f satisfies the conditions : f ( -3 ) = - 2 and f ( 3 ) = 16 , find f ( x ). Click here to see answer by ewatrrr(10682)

 Question 359076: Find the domain of the function f(x)=3+squareroot 36-x^2/x^2-9 Click here to see answer by edjones(7569)

 Question 359177: whats the value of algebra problem if g(x)=x2-2x g(1/5) Click here to see answer by Fombitz(13828)
 Question 359177: whats the value of algebra problem if g(x)=x2-2x g(1/5) Click here to see answer by ewatrrr(10682)

 Question 359358: Let f(x) = 2x - 1 and g(x) = (x + 5)/2. Find the function (f o g)(x). Simplify your answer. Click here to see answer by stanbon(57387)
 Question 359358: Let f(x) = 2x - 1 and g(x) = (x + 5)/2. Find the function (f o g)(x). Simplify your answer. Click here to see answer by edjones(7569)

 Question 359526: Is this a linear equation, and if so, how can it be written in standard form? x + 1/y = 7 Click here to see answer by Fombitz(13828)

 Question 359786: let h(x)=x^2-9. find two functions F and G such that f o g= h Click here to see answer by stanbon(57387)

 Question 359886: f(x) = (SQUARE ROOT OF...) 25-x^2, find the value of f(3) Click here to see answer by robertb(4012)

 Question 359945: Find f"circle"g and g"circle"f. f(x)= -2x; g(x)= -2x^2 +3 Click here to see answer by stanbon(57387)

 Question 359898: Determine the equation of the parabola with vertex, a) (1,6) and passes through (0,-7) b) (4,-5) and passes through (-1,-3) thank you Click here to see answer by Fombitz(13828)

 Question 360095: Use the function given by (f(x)=x/8+1 & g(x)=x^3 to find the indicated value (f o g)-1(5) Click here to see answer by ewatrrr(10682)

 Question 360197: Solve the problem. Express the gross salary G of a person who earns \$40 per hour as a function of the number x of hours worked. Click here to see answer by rfer(12670)

 Question 360278: find an equation of the line containing the given pair of points. express your answer in the form x=a,y=b,or y=mx+b (-2,-2) and (1,1) What is an equation of the line? y= Click here to see answer by stanbon(57387)

 Question 360282: write an equation of the line containing the given point and parallel to the given line. express your answer in the form y=mx+b (7,9);x+9y=2 the equation of the line is y= Click here to see answer by mananth(12270)

 Question 360291: write an equation of the line containing the given point and perpendicular to the given line. (9,-6); 7x+8y=9 the equation of the line is y= Click here to see answer by Alan3354(30993)

 Question 360287: write an equation of the line containing the given point and parallel to the given line express your answer in the form of y=mx+b (-7,8),4x=9y+7 the equation of the line is y= Click here to see answer by Alan3354(30993)

 Question 360288: write an equation of the line containing the given point and perpendicular to the given line. express your answer in the form y=mx+b (6,9);3x+y=2 the equation of the line is y= Click here to see answer by Alan3354(30993)

 Question 360275: find an equation of the line having the given slope and containing the given point. m= 3/4, (6,-7) The equation of the line is y= type your answer in a slope intercept form Click here to see answer by rfer(12670)

 Question 360191: Need help with the following: For the given functions f and g, find the requested function and state its domain. f(x) = sqrt x + 11; g(x) = 3/x Find f ∙ g. Click here to see answer by Theo(3464)

 Question 360194: Please help!!: The cost C of double-dipped chocolate pretzels varies directly with the number of pounds of pretzels purchased, P. If the cost is \$54.42 when 5.0 pounds are purchased, find a linear function that relates the cost C to the number of pounds of pretzels purchased P. Then find the cost C when 6.0 pounds are purchased. Click here to see answer by Theo(3464)

 Question 360280: find an equation of the line containing the given pair of points. (1/4,-1/2) and (3/4, 3 ) what is the equation of the line y= Click here to see answer by nerdybill(6962)

 Question 360500: If , how many integers are in the domain of f ? a none b 3 c 4 d 7 e infinely many Click here to see answer by Edwin McCravy(8909)

 Question 360526: How many imaginary zeros does the function f(x) = 3x4 + 2x3 + 4x + 7 have? Click here to see answer by Edwin McCravy(8909)

 Question 360468: if the zeros of f(x) are 2 and 3, what are the zeros of f(x+1)? Click here to see answer by edjones(7569)

 Question 360467: if f(x) = 2x+1 and g(x) = x^2 -1 then (g.f)(x)= . = o Click here to see answer by edjones(7569)

 Question 360747: p(x)=-4+24 where p(x) is selling price and x is # of cd's sold, what is the maximum revenue? a)3000 b)20,000 c)24,000 d)36,000 thanks Click here to see answer by jim_thompson5910(28598)

 Question 360756: p(x)= -4+24 where p(x) is selling price and x is # of CDs sold, what is the maximum revenue?Revenue=(p(x))(x) a)3000 b)20,000 c)24,000 d)36,000 thanks (there is no typo i checked 10 times) Click here to see answer by jim_thompson5910(28598)

 Question 360833: Hi, I'm having some trouble with compositions of functions with fractions. Here is the question: f(x) = (x-1)/(x-3) g(x) = (x-8)/(x-9) Find f(g(x)) Find g(f(x)) Thank you SO much! Click here to see answer by jim_thompson5910(28598)

 Question 360825: I have been trying to help my 8th grade daughter with her Algebra 1 homework. We have spent countless hours trying to figure this one out at her grade level. The teacher is asking for an equation or rule for the following: x values: 1, 10, 19, 28 y values: 6, 2, -2, -6 (we know that the x values increase by 9) (we know that the y values decrease by 4) Please help us with this, trying to figure out every combination of -4/9 ??? or something. We need a rule or equation. THANK YOU SO MUCH Click here to see answer by ewatrrr(10682)

 Question 361326: Given the function g(x)=x2+12x find the indicted values if g(3) and g(-5) Click here to see answer by edjones(7569)

 Question 361778: For this function, find three ordered pairs that lie on the graph of the function for: y = |x| + 6 Click here to see answer by Fombitz(13828)

 Question 361806: Find the slope of the line that is (a) parallel and (b) perpendicular to the line through the pair of points. (-7,-2) and (1,7) The answer(s) has to be as an integer or simplified fraction Click here to see answer by mananth(12270)

 Question 361814: Find an equation of the line described below. Write the equation in slope-intercept form (solved for y), when possible. Through (13,9) and (9,13) What is the equation of the line? (simplify your answer.) Click here to see answer by mananth(12270)

 Question 361918: n[m(t)] if n(x) = 3^x and m(t) = SQRT(t) + 1 I really need some help I'm not understanding this problem at all!! Click here to see answer by Fombitz(13828)