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 350 units of calcium, 300 units of iron, and 400 units of vitamin B. Write a system of inequalities describing the different amounts of food X and food Y that can be used.
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A. 
B. 
C. 
D. 
E. 
Answer: A
Mathematics
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Solve the problem.A town has a population of 2000 people and is increasing by 9% every year. What will the population be at the end of 11 years? Round to the nearest unit.
A. 5161 B. 3980 C. 4735 D. 5625
Mathematics
Solve the inequality graphically, numerically, or symbolically, and express the solution in interval notation. Where appropriate, round to the nearest tenth.9?x + 5? ? 3
A. 
B. 
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C. 
? 
D. 
? 
Mathematics
Solve the equation graphically. Round to the nearest thousandth.log2
= 9
A. -4.775, 4.775 B. 4.021 C. 4.759 D. -4.759
Mathematics
Write a polar equation of a conic that has its focus at the origin and satisfies the given conditions. Parabola, directrix y = 3
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Mathematics