Final answer:
Autumn volunteered for a total of 6 3/4 hours over a 3-week period. Her average weekly volunteer hours is 2.25 hours, which exceeds the school’s challenge rate of 1 1/2 hours per week. She is volunteering more than the recommended amount.
Step-by-step explanation:
The student wants to compare her volunteering rate with the challenge rate recommended by her school. The challenge rate is volunteering for at least 1 1/2 hours per week. We will calculate the student’s average weekly volunteer hours and compare it to the school’s challenge rate.
Calculation of Average Weekly Volunteer Hours:
Autumn volunteered for 6 3/4 hours over a 3-week period. To find her average weekly volunteer hours, we divide the total volunteer hours by the number of weeks.
Total volunteer hours: 6 3/4 hours = 6.75 hours
Number of weeks: 3
Average weekly volunteer hours = Total volunteer hours / Number of weeks
Average weekly volunteer hours = 6.75 hours / 3 weeks
Average weekly volunteer hours = 2.25 hours per week
Comparison with Challenge Rate:
Average weekly volunteer hours: 2.25 hours per week
Challenge rate: 1 1/2 hours per week = 1.5 hours per week
Since 2.25 hours per week is greater than 1.5 hours per week, Autumn is volunteering more than the challenge rate set by her school.