SOLUTION: Hi, can someone help me? Thank you (Don't have to show work) Given f(x)=2x+5 and g(x)=3x-4, find (gf)(x). A. 5x+1? B. 6x^2-20? C. 6x^2+7x-20? D. 6x^2+23x+20?

Algebra ->  Functions -> SOLUTION: Hi, can someone help me? Thank you (Don't have to show work) Given f(x)=2x+5 and g(x)=3x-4, find (gf)(x). A. 5x+1? B. 6x^2-20? C. 6x^2+7x-20? D. 6x^2+23x+20?      Log On


   

Question 993253: Hi, can someone help me? Thank you (Don't have to show work)
Given f(x)=2x+5 and g(x)=3x-4,
find (gf)(x).
A. 5x+1?
B. 6x^2-20?
C. 6x^2+7x-20?
D. 6x^2+23x+20?
Answer by Edwin McCravy(20054) About Me  (Show Source):
You can put this solution on YOUR website!
(gf)(x) = g(x)f(x) = (3x-4)(2x+5)

FOIL that out, collect terms and see which one is the answer.

Edwin