Required: 1. Calculate the four activity rates. Machining rate 1 per machinet hour 2. Calculate the unit casts using activisy rates. Round your answers to the rearest cent. Calculate the everhead east per unit. Round your answers to the fearest cent. Required: 1. Calculate the four activity rates. Machining rate 1 per machinet hour 2. Calculate the unit casts using activisy rates. Round your answers to the rearest cent. Calculate the everhead east per unit. Round your answers to the fearest cent