Question

PLEASE HELP!!!After a gas-filled balloon is released, it rises 90 feet by the end of the first minute. By the end of the second minute, the balloon rises 120 feet, and by the end of the third minute, it rises 150 feet. How many feet would the balloon rise in 8 minutes?
a.

300

c.

390
b.

330

d.

660

Answer 1

is it total of 8 min or after another 8 min???

Answer 2

you can see that the rate of change is 30ft per min right so from there you will get your answer

Answer 3

what do I need to multiply?

Answer 4

ok you see that they already added the 3 min right

Answer 5

right

Answer 6

so subtract the 3 out from 8 and you will get 5 right

Answer 7

right

Answer 8

you remember about the 30 minutes?

Answer 9

yes

Answer 10

multiply that number by 5 and you get 150 then add it to the amount of feet it went up in 3 min which is 150. So 150 + 150 = 300 --------> Answer

Answer 11

A

Answer 12

yes