Antonio Inc. expects sales of 2,000 units of Z1 in January. Z1 is its most popular high performance desktop model. The sales manager is confident that, between January and April, the total sales will have a 30% growth rate each month from the month before. Each unit requires 3 sets of the Alpha-1 chip. The firm has a policy to maintain Z1 inventory at the end of each month equal to 20% of the following month's estimated sales. The firm