The graph below shows the amount of money a store earns for selling T-shirts.

у

T-shirt Sales

100

80

60

Money Earned

(dollars)

40

20

0

4

24

8 12 16 20

Number of T-shirts Sold

What is the unit rate of the graph?

The graph below shows the amount of money a store earns for selling T-shirts.

у

T-shirt Sales

100

80

60

Money Earned

(dollars)

40

20

0

4

24

8 12 16 20

Number of T-shirts Sold

What is the unit rate of the graph?