Use an IF function in cell E18 to calculate the price to charge per donut for order 1. A customer is charged $.50 per donut unless they buy a dozen or more. In this case, they are charged $.40 a donut. Refer to the appropriate price in cells C11 and C12 for your "value_if_true" and "value_if_false" arguments

The owner of firewood to go is considering buying a hydraulic wood splitter which sells for $50,000. he figures it will cost an additional $100 per cord to purchase and split wood with this machine, while he can sell each cord of split wood for $125. if, for this machine, design capacity is 50 cords per day, effective capacity is 40 cords per day, and actual output is expected to be 32 cords per day, what would be its efficiency?