Question

I will give a medal!
Evaluate the function for x = –4c if c = –2.

f(x)=-3x^2-4x

Answer 1

first substitute the c for -2, so what is -4(-2)

Answer 2

x = –4c
c=-2
x=-4(-2)
x=8

f(x)=-3x^2-4x
f(8)=-3(8)^2-4(8)
f(8)=-192-32
f(8)=-224