19. Four friends went scuba diving today. Ali dove 70 feet, Tim went down
50 feet, Carl dove 65 feet, and Brenda reached 48 feet below sea
level. Write the 4 friends' names in order from the person whose depth
was closest to the surface to the person whose depth was the farthest
from the surface.-S-

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,