Answer:
18
Step-by-step explanation:
We want to find the composite function at a specific value (-5).
Thus, we can write and think of the function like this:
f[g(-5)]
So we substitue the -5 for every x in the g(x) function:
g(x) = -5 + 7 = 2
Then we substitute this 2 for every x in the f(x) function:
f(x) = 2^2+7(2) = 4 + 14 = 18
