Hugo’s friends bought used books at the yard sale sonia paid 2.25 john paid 6.00 and keisha paid 3.75 how many books did each friend buy

Well, if each book only costs 0.25, then
Sonia bought 9 books
John bought 24 books
Keisha bought 15 books
If each book costs 0.75, then
Sonia bought 3 books
John bought 8 books
Keisha bought 5 books

7.666270253x10 raised to the 18th power

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?