Question

Find f(-7) if f(x) = 2x + 8. How do i do this?

Answer 1

put x =-7 in 2x+8

Answer 2

Substitute for x with -7
so it will be :
f(x) = 2x + 8
f(-7)=2(-7)+8
f(-7)=-14+8=-6

Answer 3

2(-7)+8

Answer 4

thanks guys i got it now

Answer 5

:)