Add or subtract, as indicated. Assume that all variables represent positive real numbers.
- 
A. -7
B. -35
C. 11
D. -7
Answer: A
Mathematics
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A doctor orders tetracycline elixir qid for a child weighing 60 lb at a dosage of 8 mg/kg/day in equally divided doses. How many mg would one dose contain?
A. 54 mg/dose B. 108 mg/dose C. 216 mg/dose D. 72 mg/dose
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Evaluate.(0.04)4
A. 0.00000256 B. 0.000064 C. 0.00000625 D. 0.0000001
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Factor by grouping.pq + q - 4p - 4
A. p(q - 4) + 1 B. (p + 1)(q - 4) C. (p - 1)(q - 4) D. p(q - 4)
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Factor the polynomial completely.81x2 - 64
A. (9x + 8)2 B. (81x + 1)(x - 64) C. (9x + 8)(9x - 8) D. (9x - 8)2
Mathematics