Answer:

Step-by-step explanation:
From the question we are told that:
Generally the equation if differentiated is mathematically given by

Where
y'=0

Factorizing,We have

Therefore
The critical points are

Just multiply 100 feet by 12 and you get 1200 inches per second, so more.
<span>It is possible for two points to have the same x-coordinate and the same y-coordinate. </span>
A=8
Explanation: a+b=12 a-b=4
^^^^^^^ ^^^^^^
8+4=12 8-4=4
A=8