According to the graph, what is the value of the constant in the equatlon below?

(3,1.5) (2,1) (8,4) (7,3.5)

A. 2

B. 8

C. 4.

D. 0.5

Barrett is comparing the membership fees for two museums. the art museum charges a one-time fee of $8.25 plus $2.25 per month. the science museum charges a one-time fee of $10.75 plus $3.50 per month. how much does barrett save by joining the art museum instead of the science museum?