D.
Step-by-step explanation:
f(x) increases by 2 as x increases by 1 x value.
We know it isn't A since and x value plue 2 would not equal the y value.
But if you multiply each x-value by 2 you get f(x)
D is the equation for f(x)
huh? im pretty sure it is in 199
step-by-step explanation:
susie has 7 apples