Answer:
Your answer is 6!
Step-by-step explanation:
[tex]f(-1)=-3(-1)+3\\f(-1)=3+3\\f(-1)=6[/tex]
f(-1) = 6
[tex]f(x)=-3x+3\\\\f(-1)=-3(-1)+3\\\\f(-1)=3+3\\\\\boxed{f(-1)=6}[/tex]
Hope this helps.
