Volunteers at Sam's school use some of the student council's savings for a special project. They buy 6 backpacks for $8 each and fill each backpack with paper and pens that cost $4. By how much did the student council's savings change because of this project?

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?