Answer:
Rate of Change = $10 per hour
Step-by-step explanation:
Rate of change, or slope, technically means change in y-coordinates by change in x-coordinates.
Here, by rate of change, we mean the change in cost of renting per unit time (per 1 hour).
So we see that rate changes by 30 [90 - 60 dollars] when time changes by 3 [ 5 - 2 = 3 hours]
Thus, we can say the rate of change (per unit time) would be:
30/3 = 10 dollars per hour
Rate of Change = $10 per hour