Answer:
Student council's savings reduced by

Explanation:
Given:
Volunteers buy 8 backpacks for $4 each and fill each backpack with paper and pens that cost $3
To find:
Change in student council's savings
Solution:
Cost of paper and pens in each backpack =

Total cost of paper and pens in 8 backpacks =
×
=

Cost of each backpack =

Total cost of 8 backpacks =
×
=

So, student council's savings reduced by
