Ann bought 4 cameras and 2 computers for $2868.32
altogether. Ann's sister bought 2 cameras and 5 computers
for $3562 28. What is the price of one computer?

$532.03

Step-by-step explanation:

Ann: 4 cameras + 2 computers = $2868.32

Sister: 2 cameras + 5 computers = $3562.28

If the sister has bought 2 sets:

Sister: 4 cameras + 10 computers = 3562.28 x 2 = $7124.56

Comparing the two equations:

4 cameras + 2 computers = $2868.32

4 cameras + 10 computers = $7124.56

We can conclude that:

10 - 2 computers = 7124.56 - 2868.32

8 computers = $4256.24

If 8 computers = $4256.24

1 computer = $4256.24 ÷ 8 = $532.03

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,