Question

Mr. Durand recorded the amount he spent on gas each month to see if it would be cheaper to take the train to work.
Amount Mr. Durand spent on gas
Month Dollars spent on gas
July $62
August $66
September $62
October $67
November $69
According to the table, when was the rate of change greater?

Answer 1

Compute the month-to-month changes:
- July → August: 62 → 66 = +\$4
- August → September: 66 → 62 = −\$4
- September → October: 62 → 67 = +\$5
- October → November: 67 → 69 = +\$2

The greatest rate of change (largest increase) was between September and October: an increase of \$5.