At the local bakery, Ariel bought 2 oatmeal cookies for $1.50. Mei bought 12 dozen oatmeal cookies for $4.50. Becky bought 8 oatmeal cookies for $6.00.

Question

its a graph so i need a graph answer

Answer 1

Ariel paid 1.50/2 = $.75 per cookie = 75 cents

Mei bought 4.50/12 = $.37 1/2 per cookie= 37 1/2 cents, twice as cheap as Ariel paid

Becky got 6/8 = 3/4 = 75 cents per cookie, same price as Ariel

(2,1.5), (12, 4.5), (8,6) are the points representing the purchases, plot them on a graph

1st and last are on a straight line, but the middle one represents a volume discount that kicks in at a dozen cookies. it's a step function, a discontinuity at x= 12