The high temperatures for several days are shown in the table. which answer describes the average rate of change from day 3 to day 5?

day high temperature (degrees)
1 67
2 63
3 59
4 58
5 53

a. -4
b. -2
c. -6
d. -3

  D.  -3

Step-by-step explanation:

The temperature changes from 59 to 53 in those two days, so the average rate of change is ...

  (change in temperature)/(change in days) = (53 -59)/(5 -3) = -6/2

  = -3 . . . . degrees per day

b i think

step-by-step explanation:

not really sure

step-by-step explanation:

12: 00 p.m. to 7: 00 p.m. is a total of 7 hours.

4: 00 p.m. to 7: 00 p.m. is a total of 3 hours.

this means that from 4: 00 p.m to 7: 00 p.m. this represents 3/7 of what was lost from 12: 00 p.m. to 7: 00 p.m.

after knowing this, after doing 11,600 - 6,800 = 4,800

4,800 represents 3/7 of what was lost for 7 hours.

we then divide 4,800 by 3 which gets 1,600.

because we know that 1,600 represents 1/7 of how much water was lost, we just have to multiply by 7, which gets 11,200.   after adding 11,200 to how much water was left at 7: 00 p.m. which was 6,800. 11,200 + 6,800 = 18,000

this means that the pool originally had 18,000 gallons in the pool.

you can also check your work by doing 18,000 - 4(1600), which becomes           1800 - 6400 which gets you 11,600.