On reese’s most recent phone bill bill, 80% of the minutes she used were calling her mother. if she talked to her mother for 348 minuets, how many total minutes did she used?

we don't have enough info to solve this

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,