Answer :
Autumn's volunteer rate is 2 1/4 hours. It is greater than the challenge rate.
What is Autumn's volunteer rate?
In order to determine her volunteer rate, divide the total number of hours by the total number of weeks.
Volunteer rate = total hours / number of weeks
63/4÷ 3
27 / 4 x 1/3 = 9/4 = 2 1/4
Autumn's volunteer rate exceeds the minimum rate they are advised.
To learn more about rate, please check: https://brainly.com/question/8305748