The above plot shows three fits to data a student collected in a load deflection test: linear, power function, and log-linear. the student doesn't know anything about the expected behavior of the material. based solely on the information shown in the plot, which is the best fit to the data?

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?