Question

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Answer 1

for a) you need to find the slope, aka rate of change between bushels in the current year. for two bushels its $16 and for 4 it's $32. to find the slope, do y2-y1/x2-x1. so (2,16) (4,32). so to find the rate of change, its 32-16/4-2. 16/2=8. so 8 dollars/bushel.
b) Find the rate of change of bushels from the previous year. 24-12/4-2. 12/2=6 dollars/bushel. So one bushel is $6 and $8 the current year. What's the difference?

Answer 2

No problem :)