i don't get it.

1. At a muffin shop, 2- dozen muffins were sold in - hour. What is the unit rate fo the dozens of muffins sold per hour? 10 b. 120 C. 10 d. 83 2. The graph shows the relationship between the number of cookies per cup of flour. 384- 288 Number of cookies 192 12 18 Cups of flour Find k. Write the equation for this graph: 3. A remote control plane travels _ of a mile in - of an hour. What is the speed the helicopter in miles per hour? a. 16 mph b. 93 mph C. 11 mph d. 6 mph