aker Manufacturing Company forecasts the following demand for a product (in thousands of units) over the next five years. Year 1 2 3 4 5 Forecast Demand 128 144 147 151 150 Currently the manufacturer has nine machines that operate on a two-shift (eight hours each) basis. Twenty days per year are available for scheduled maintenance of equipment. Assume there are 250 workdays in a year. Each manufactured good takes 20 minutes to produce. What is the effective capacity of the factory? Round your answer down to the nearest whole number and use this answer in subsequent computations. units/year Given the five-year forecast, how much extra capacity is needed each year? Round your answers to the nearest whole number. Year 1 2 3 4 5 Extra capacity needed (units) Does the firm need to buy more machines? If so, how many? When? If your answer is zero, enter "0". Round your answers up to the nearest whole number. Year 1 2 3 4 5 Additional machines needed