The Caudell family went out to dinner. If their dinner bill came to $52.50 and they paid $61.95, what percent of a tip did they leave their waiter?​

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{ {