You want to buy some rice. An 8-ounce package costs $2.88. A 12-ounce package costs $4.56. A 26-ounce package costs $9.10. Which package is the best buy?

Divide cost by ounces. The lowest cost per ounce is the better buy.

2.88/8 = 0.36

4.56/12 = 0.38

9.10/26 = 0.35

The 26 ounce package is the better buy.

b or 2, just plug these equations into your graphing calculator then check the graph to see the image. if it matches up then that's your answer!