Frank is painting some fencing. After 1/2 hour, he has painted 3 1/4 feet of fencing. What is the rate, in feet per hour, at which she is painting? Express your answer as a mixed number.

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{ {