Identify all the sets to which the number belongs. choose from rational number, irrational number, whole number, and integer. 0.62478916532 a. rational number b. irrational number c. integer, rational number d. whole number, integer, rational 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{ {