Callie sells cookies each Friday at her local farmers market. The graph shows the amount of money Callie has earned from cookie sales this season

Week 2 is $7 week 8 is $28 what does the rate of change represent

1 answer

To determine what the rate of change represents in Callie's cookie sales from week 2 to week 8, we can first calculate the change in her earnings over this time period.

  1. Calculate the change in earnings:

    • Earnings at week 8: $28
    • Earnings at week 2: $7
    • Change in earnings = $28 - $7 = $21
  2. Calculate the change in the number of weeks:

    • Weeks from week 2 to week 8: 8 - 2 = 6 weeks
  3. Calculate the rate of change:

    • Rate of change = Change in earnings / Change in weeks
    • Rate of change = $21 / 6 weeks = $3.50 per week

The rate of change of $3.50 per week represents the average increase in the amount of money Callie earns from selling cookies each subsequent week between week 2 and week 8. This suggests that, on average, her sales increase by $3.50 each week over that period.