Question

If f(x)=5x-23, find f(-4)

Answer 1

f(-4)=-43

Explanation:

f(x)=5x-23, find f(-4)

f(-4) simply means that -4 replaces the variable x, so put -4 in for x in the equation.

f(-4)=5(-4)-23

Now solve

f(-4)=-20-23

f(-4)=-43