Question

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

Answer 1

F(-7)=2(-7)+8
=-14+8
=-6

Answer 2

-6

Explanation:

f(x) = 2x + 8

Put x as -7.

f(-7) = 2(-7) + 8

Multiply first.

f(-7) = -14 + 8

Add.

f(-7) = -6