Question

Mickey bought 3 books from the bargain bin at his school's book fair and paid . If buying books from the bargain bin follows a direct variation, how much did his sister pay for the 4 books she bought?
a 7
b 16
c 10
d 12

Answer 1

You need to tell us how much he paid.

Answer 2

ohh sorry he paid 9$

Answer 3

\[\frac{3}{9}=\frac{4}{x}\]