SOLUTION: find f∘g for f(x)=4√x-1 and g(x)= 3x+2 I have been super confused on this. a. 4√3x+1 b. 4x√x-1 +3x^2+2x c. 4√x-1 +3x+2 d. 19x+18

Algebra ->  Functions -> SOLUTION: find f∘g for f(x)=4√x-1 and g(x)= 3x+2 I have been super confused on this. a. 4√3x+1 b. 4x√x-1 +3x^2+2x c. 4√x-1 +3x+2 d. 19x+18      Log On


   

Question 883234: find f∘g for f(x)=4√x-1 and g(x)= 3x+2
I have been super confused on this.
a. 4√3x+1
b. 4x√x-1 +3x^2+2x
c. 4√x-1 +3x+2
d. 19x+18
Answer by LinnW(1048) About Me  (Show Source):
You can put this solution on YOUR website!
f(g(x)) = 4%2Asqrt%283x%2B2%29+-+1
if f(x) is actually 4%2Asqrt%28x-1%29
then
f(g(x)) = 4%2Asqrt%283x%2B2+-+1%29
= 4%2Asqrt%283x%2B1%29