Question

Find f(-7) if f(x) = 2x + 8.

-6
2
3
22

Answer 1

are the numbers below possible answers?

Answer 2

to get f(-7)
just plug in x=-7 in f(x)

Answer 3

so what u get for
2(-7) +8 =... ?

Answer 4

u have to substitute (-7) in place of x.
f(-7)=2(-7)+8
=-14+8
=-6