Mr. Smith is draining his pool to have it cleaned. At 8:00 A. M., it had 2000 gallons of water and at 11:00 A. M. it had 500 gallons left to drain. What is the rate of change in the amount of water in the pool?

500 gallons per hour

Step-by-step explanation:

rate =2000-500 gallons/ 3hours

      =1500 gallons/3 hours

      =500gallons per hor

452,489 to the nearest thousand is 452,000

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10