PLEASE HELP ME

b

Step-by-step explanation:

In general

Given

y = f(x) then y = f(Cx) is a horizontal stretch/ compression in the x- direction

• If C > 1 then compression

• If 0 < C < 1 then stretch

Consider corresponding points on the 2 graphs

(2, 2 ) → (4, 2 )

(4, - 2 ) → (8, - 2 )

Indicating a stretch in the x- direction.

y = f( ) with C = , that is 0 < C < 1

stretches the graph in the x- direction by a factor of 2

Thus

y = f( ) → b

i think it is 18

step-by-step explanation: