Ben's boat will take 1 and a half hours to go 12 miles up a river than to return. what is the rate of his boat if the rate of the current is 2 miles an hour?

15. jiovanni is looking in to two different companies that offer study guides for math exams.test prep 101 charges a $5 flat fee and an additional $0.25 per problem.math charges a $2 flat fee and an additional $0.50 per problem.how many prablems would make the costs of the two companies be equal? varibles: equations/eniqualities{ {