Which list shows all the factor pairs of 64?
a.
1 and 64, 2 and 32, 3 and 18, 8 and 8
b.
1 and 64, 2 and 32, 3 and 16, 8 and 8
c.
1 and 64, 2 and 32, 4 and 16, 8 and 8
d.
1 and 64, 2 and 32, 4 and 18, 8 and 8

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{ {