Question

Please help me answer this correctly,

Answer 1

if x= -2

then f(x) = 2×(-2)+8

= -4+8

= 4

if x=0

then f(x)=2×0+8

=0+8

=8

if x=5

then f(x)=2×5+8

=10+8

=18

Answer 2

anywhere you see x, input the value in the brackets.

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

= -4+8

=4