Question

How do i find f(-3) ?

Answer 1

Explanation:

f(-3) = -81

instead of x you need to write (-3)

`f( - 3) = 3 * {( - 3)}^(3)`

`= 3 * ( - 27) = - 81`

Answer 2

If f(-3) is there then that means at the top your problem will change to f(-3)=3x^3 and you will get f =-x^3

Explanation:

divide both sides by -3