Shilo is trying to compute the value of 27 + 55 + 13. She adds 27 + 13 to get 40 and then adds on 55. Which of the following properties is Shilo using? 1.) commutative
2.) distributive
3.) identity
4.) associative

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{ {