A dietitian is asked to design a special dietary supplement using two different foods. Each ounce of food X contains 20 units of calcium, 15 units of iron, and 10 units of vitamin B. Each ounce of food Y contains 10 units of calcium, 10 units of iron, and 20 units of vitamin B. The minimum daily requirements of the diet are 300 units of calcium, 250 units of iron, and 350 units of vitamin B. Write a system of inequalities describing th different amounts of food X and food Y that can be used. 20x + 10y 2 300 15x + 10y 2 250 10x + 20y 2 350 x20 20x + 10y 2 350 15x + 10y 2 300 10x +20y 2 250 x20 ly20 20x + 10y 2 250 15x + 10y 2 300 10x + 20y 2 350 x20 y 20 20x + 10y 2 350 15x + 10y 2 250 10x + 20y 2 300 x20 ly20 20x + 10y 2 250 15x +10y 2 350 10x +20y 2 300 x20

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