Question

Mr. G rents a truck for 3 hrs at $80 and then rents it again for an additional 5 hrs at $320. What was his rate of change for Mr. G during his second period of rental?
A. $120/hr
B. $240/hr
C. $1/120hr
D. $2/240hr

Answer 1

A is the answer! 320 - 80 = 240, divide by 2 = 120/hr!

Answer 2

Answer:

Rate of change for Mr. G during his second period of rental is :---

$→\frac{(\ 320 - \ 80)}{(5hr - 3hr)} = \frac{\ 240}{2hr} = \boxed{\ 120{hr}^{-1}}$

A. $120/hr is the right answer.