Use scientific notation to perform the computation. Leave the answer in scientific notation.
A. 1.0 × 10-3
B. 1.0 × 10-2
C. 1.0 × 10-4
D. 1.0 × 10-1
Answer: A
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Simplify the expression. Write the result using positive exponents only.
A. x5
B. 
C. - 
D. -x5
Add.
+ 
A. 
B. - 
C. 
D. - 
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. ?
A. 
B. 
C. 
D. 
E. 
Simplify. Assume that no radicands were formed by raising negative quantities to even powers.
A. b
B. 
C. 
D. 6