SOLUTION: 1. f(x)=3x and g(x)=4x-3, find f[g(5)] and g[f(5)].? please help.

Algebra ->  Functions -> SOLUTION: 1. f(x)=3x and g(x)=4x-3, find f[g(5)] and g[f(5)].? please help.      Log On


   

Question 390291: 1. f(x)=3x and g(x)=4x-3, find f[g(5)] and g[f(5)].?
please help.
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
f(x)=3x and g(x)=4x-3
f(g(x))=3(4x-3)
=12x-9
f(g(5))=60-9=51
.
g(f(5))=4(3*5)-3
=60-3
=57
.
Ed