Answer: 2 deliveries per hour
Step-by-step explanation:
10.5 - 8.7 = 1.8
There is 1.8 feet of pipe left
Answer:

Step-by-step explanation:
Given


Required
Determine the rate of change.
From the given parameters, we understand that the on a daily basis, there's a charge of $0.05.
This charge represent the rates at which the fee changes on a daily basis.
Hence:

A° = 1/2 (90) = 45°
b° = 1/2[360 - (110 + 90)]
b° = 1/2(160)
b° = 80°
a° + b° = 45° + 80° = 135°
Answer
135°
The answer is 7.8,7.96,8.014,8.2,8.7