Question

Frank owns x books and Sara owns one more than twice as many. What algebraic expression represents the number of Sara’s books?

Answer 1

2x+1 since Sara has twice as many (2x), and one more (+1).

Answer 2

If Sara owns one more than twice as many books that Franks has then she has twice as many plus one more. Say Frank has 12 books, multiply that by 2 and then add 1.

Your equation should look like this: S= 1 + 2x