A 12-pack of juice boxes costs $4.32. A case of 20 juice boxes costs $7.80. Which is the best buy? Explain your reasoning.

$4.32 / 12 = $0.36 (12 pack)

$7.80 / 20 = $0.39 (20 pack)

The 12 pack of juice works out to cost $0.36 per box of juice while the 20 pack of juice works out to cost $0.39 per box of juice therefore, the 12 pack of juice is the best buy as you will pay less per box of juice than you would with the 20 pack of juice

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,