Jennifer order 5 pairs of shoes online. all shoes were the same price and she paid $375 which included shipping. choose the statements below that could be true.

a. if shipping cost $30, each pair of shoes cost $77.00

b. if shipping cost $40, each pair of shoes $67.00

c. if shipping cost $50, each pair of shoes cost $65.00

d. if shipping cost $60, each pair of shoes cost $70.00

e. if shipping cost $70, each pair of shoes cost $61.00

A. 375 (cost) - 30 (shipping) = 345

345 / 5 = 69 [not true]

B. 375 (cost) - 40 (shipping) = 335

335/ 5 = 67 [could be true]

C. 375 (cost) - 50 (shipping) = 325

325 / 5 = 65 [could be true]

D. 375 (cost) - 60 (shipping) = 315

315 / 5 = 63

E. 375 (cost) - 70 (shipping) = 305

305 / 5 = 61 [could be true]

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 13

step-by-step explanation:

5*5=25

12*12=144

25+144=169

169^2=13