There is a half a pan of brownies left four children are going to share it equally what fraction of a whole pan of brownies would each child get

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?

Ibelieve it's a. 2.2 - x = -10.85 (plz tell me if it's right : ) )