Variable c is 5 more than variable a Variable c is also 3 less than variable a Which pair of equations best models the relationship between c and a?
c=a-5
C = a + 3

a=c+5
a = 3c - 3

a=c-5
a = 3c + 3

C = a + 5
C = a - 3

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{ {