Russell wants to buy 3 tires and a belt in my spend no more than 80 dollars. The belt cost 28 dollars and 50 cents if the 3 ties are the same price than how much he pay for each tie​

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{ {