The jet could fly 2,000 miles in 8 hours and the rate of speed is 250miles per hour.
Yes it is because the value is constantly raising.
You transformed the function as follows:

All trasformations of the fashion
translate the function horizontally, k units right if k is positive, k units left if k is negative.
In your case, k=6, so you translated the original function y=|x| 6 units to the right.
Answer:
The derivative is

Step-by-step explanation:
The function is given by

Differentiate with respect to x, we get

The product of this is 90