Solve.Young's rule, C = 
, can be used to approximate the dosage of a drug prescribed for children. In this formula, A = child's age in years, D = an adult dosage, and C = the proper child's dosage. When the adult dosage is 100 milligrams and the child's dosage is 25 milligrams, what is the child's age?
A. 3
B. 4
C. 6
D. 5
Answer: B
Mathematics
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If a woman making $37,000 a year receives a cost-of-living increase of 2.2%, how much is her raise?$__________
Fill in the blank(s) with the appropriate word(s).
Mathematics
Simplify the expression.cos4x + sin2x cos2x
A. cos2x B. sin2x + 1 C. -sin2x D. cos2x + 1
Mathematics
Solve the problem.The half-life of a certain radioactive substance is 20 years. Suppose that at time 
there are 30 g of the substance. Then after t years, the number of grams of the substance remaining will be N(t) = 30(1/2)t/20. How many grams of the substance will remain after 80 years?
A. 0.47 g B. 0.23 g C. 1.88 g D. 0.94 g
Mathematics
Solve the equation using the multiplication property of equality.40 = - 
x
A. {- 48}
B. 
C. 
D. 
Mathematics