farmer green grows cannabis. if farmer green plants no seeds, there is no harvest. if farmer green plants 1 bushel of seeds, he gets 100 pounds of cannabis. if farmer green plants 2 bushel of seeds, he gets 180 pounds of cannabis. if farmer green plants 3 bushel of seeds, he gets 235 pounds of cannabis. if a bushel of seeds costs $1,000 each and this is the only cost, the total-cost curve is