Question

check-in 1 practice test (calculator active) (11/18/2025)

miles driven	gallons of gas used
40	2.4
60	3.5
80	4.7
100	5.9

1. darla recorded the miles she drove on different days and the gallons of gas she used on those days.

what was the average rate of change in the gallons used as the miles driven changed from 40 to 100?

• 0.06
• -0.06
• 0.6
• 17.1

Explanation:

Step1: Identify relevant values

At 40 miles: 2.4 gallons; at 100 miles:5.9 gallons

Step2: Calculate change in gallons

$\Delta \text{gallons} = 5.9 - 2.4 = 3.5$

Step3: Calculate change in miles

$\Delta \text{miles} = 100 - 40 = 60$

Step4: Compute average rate of change

$\text{Rate} = \frac{3.5}{60} \approx 0.06$

Answer:

A. 0.06