Question

What is f[g(7)] for the following functions?

f(x) = 3x2 − 4

g(x) = 2x − 5

f[g(7)] = 9
f[g(7)] = 143
f[g(7)] = 239
f[g(7)] =281

Answer 1

Answer: 239

Explanation:

`g(7)=2(7)-5=9\\\\f[g(7)]=f(9)=3(9)^2 - 4=239`