Question

I really don't getting this

Answer 1

All you need to do is insert -4 where the x is located in the functions.
 $-4x^2 - 3x - 7$
 $-4(-4)^2 - 3(-4) - 7$
$-4(16) + 12 - 7$
$-64 + 12 - 7$
-59
g(-4) = -59