Which situation is best described by surface area? a
the amount of paint a can will hold
b
the amount needed to paint the outside of a can
c
the amount of debris stored in a prism-shaped landfill
d
the amount of dirt in a cubic planter

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,

the answer is 8.64

step-by-step explanation:

it's undefined because anything multiplied by 0 is 0. that said, 7 days is 168 hours