Solve the problem.Doctors use the rational expression 
to determine the dosage of a drug prescribed for children. In this expression, A = child's age and D = adult dosage. What is the difference in the child's dosage for an 8-year-old child and a 4-year-old child? Express the answer as a single rational expression in terms of D.
A. 
D
B. 
D
C. 14D
D. 
D
Answer: B
Mathematics
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Find the power series representation for f(x).f(x) = 
A. 1 - 
+ 
- 
+ . . .
B. 1 + 
+ 
+ 
+ . . .
C. 
+ 
+ 
+ 
+ . . .
D. 
- 
+ 
- 
+ . . .
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Provide an appropriate response.Round 587,459 to the nearest thousand.
A. 588,000 B. 587,000 C. 587,500 D. 600,000
Mathematics
Write the number in scientific notation.-0.0000001
A. -1 × 10-8 B. -1 × 10-7 C. -1 × 10-6 D. 1 × 106
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Find the sum.-392 + (-736)
A. -1128 B. -344 C. 344 D. -244
Mathematics