Amy, Shen, and John have a total of $121 in their wallets. Shen has 55 less than Amy. John has 4 times what Amy nas. How much does each have?

The answer is c. 7 (i think) i’m almost sure though

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?