Actlvity-Based Product Costing Roberts Company produces two weed eaters: basic and advanced. The company has four activities: machining, engineering, receiving, and inspection. Information on these activities and their drivers is given below. Required: Required: 1. Calculate the four activity rates. 2. Calculate the unit costs using activity rates. Round your answers to the nearest cent. 2. Calculate the unit costs using activity rates. Round your answers to the nearest cent: Calculate the overhead cost per unit. Round your answers to the nearest cent. 3. If consumption ratios instead of activity rates were used to assign costs instead of activity rates, show the cost assignment for the inspection activity