Multiply. Express the product in lowest terms.
? 
A. 
B. 
C. 
D. 
Answer: B
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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
Solve the problem.Graph f(t) = csc t in [-2?, 2?, ?/2] by [-4, 4, 1] using dot mode. Use the graph to identify the domain and period of f.
A. t ? ?n, where n is an integer; 2?
B. t ? ?n, where n is an integer; ?
C. t ? 
+ ?n, where n is an integer; 2?
D. t ? 
+ ?n, where n is an integer; ?
Find the product using one of the formulas for the square of a binomial.(2x + 9)2
A. 4x2 + 36x + 81 B. 2x2 + 36x + 81 C. 4x2 + 81 D. 2x2 + 81
Graph f by hand by first plotting points to determine the shape of the graph.f(x) = -2x + 1
A. 
B. 
C. 
D. 