Answer:
1
Step-by-step explanation:
using the rule of exponents
= 1 , then
= 1
1.
Height h = 240 feet
We insert it into formula.

Now we solve this for t:

We have two answers as the rocket will pass this height on it's way up and down.
2.
Height h = 0 feet
We insert it into formula.

Now we solve this for t:

We do not consider solution -1 as the time can not be negative. Our solution is 5s.
3.
Height at bottom of hill h = 0 feet
We insert it into formula.
What area of a combined rectangle?
The mean of the data is:
6.4
19.04 is the answer
hope that helps :)