How do u set us this problem, Yvette ran at an average pace of 6.20 ft/s during the first two laps of the race and an average of 7.75 ft/s during the second two laps. What was her average speed for the entire race.

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,

a28=58

step-by-step explanation:

a1=a1+(n-1)d

a28= 4+ (28-1)2

a28=4+(27)(2)

a28=4+54

a28=58

3

step-by-step explanation:

b is the right answer