A school band is raising money by selling popcorn. The amount in dollars raised by the band
can be modeled by the following graph.
Money Raised
18
16
14
4
2
Popcorn Sales
0 2 4 6 8 10 12 14 16 18
Bags of Popcorn

Based on the information in the graph, how many dollars are earned for every bag of popcorn
sold?