WILL GIVE 30 POINTS! please respond I really need help :) The graph shows the prices of different numbers of bushels of corn at a store in the current year. The table shows the prices of different numbers of bushels of corn at the same store in the previous year.

Previous Year
_
l Number of Bushels l Price of Corn (dollars) l
_
l 2 l 10 l
l 4 l 20 l
l 6 l 30 l
l 8 l 40 l
_
Part A: Describe in words how you can find the rate of change of a bushel of corn in the current year, and find the value. (5 points)

Part B: How many dollars more is the price of a bushel of corn in the current year than the price of a bushel of corn in the previous year? Show your work. (5 points)