Aguy stole $100 from a stores cash register, let's call it dave's. he bought $70 in groceries, and paid with the $100 bill. the store gave him $30 back. how much did the store loose?

Thirty dollars
here's why
the guy stole $100 then gave seventy dollars back to the store when he bought the groceries
so therefore he only stole thirty dollars.

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?