Answer:
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
Step-by-step explanation:
divide both sides by -3
f(-3) = -81
instead of x you need to write (-3)
[tex]f( - 3) = 3 \times {( - 3)}^{3} [/tex]
[tex] = 3 \times ( - 27) = - 81[/tex]
