Answer:
-21
Step-by-step explanation:
I recommend telling the person who wrote this to either install Grammarly, or check out that red squiggly line thingie.
By f(-3), that refers to f(x), so x = -3.
We can plug in the -3 into the formula.
-4(-3)^2 + 15
Solve:
-3 x -3 = 9.
= -4(9) + 15
= -36 + 15
= -21
