Question

Evaluate ƒ(x) = –4x – 5 for x = –1.

Answer 1

F(x) = -4(-1) - 5
 f(x) = 5 - 5
       = 0

Good luck! :)

Answer 2

F(x)=-4x-5. Now, we know that x=-1, so we just need to replace variable x with -1. Let's do it:
f(-1)=-4(-1)-5
f(-1)=4-5
f(-1)=-1. Hope it help!