Answer:
(-1,4)(1,4)
2
Step-by-step explanation:
130 pounds? I don’t completely understand the problem.
Answer:
(a) The units of f'(s) is kilometer per liter
(b) 
Step-by-step explanation:
Given
Solving (a): Unit of f'(s)
From the question, we understand that:
and
--- units
f'(s) is the inverse of C.
Hence:
i.e.
--- units
So, we have:
Solving (b): Instantaneous rate of change at:
We have:
The change is calculated as:
Substitute 90 for s
Given that: 
Answer:
2640 feet in a minute.
Step-by-step explanation:
Since the car is going 30 miles per hour, and there are 5280 feet in one mile, you would multiply 30 by 5280.
30 * 5280 = 158400
So 154800 feet = 30 miles.
Since you want to find out how fast a car going 30 miles per hour is traveling in feet per a minute, you would divide 154800 feet by 60, since there are 60 minutes in an hour.
154800 / 60 = 2640.
So 2640 feet in a minute.
If you want to check this, you can do 2640 * 60, which indeed equals 154800.
Hope this helps.
