Solve the problem.In a certain region, the median age of men, y, at their first marriage in a particular year can be approximated by the equation 
where x represents the number of years after 1980 and y is in years. In the same region, the median age of women, y, at their first marriage in a particular year can be approximated by the equation 
where x represents the number of years after 1980 and y is in years. If the current trend continues in this region, in what year will the median age of men at their first marriage equal the median age of women at their
first marriage?
A. 2002
B. 1991
C. 2000
D. 2001
Answer: D
Mathematics
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Multiply.
A. 
B. 
C. 
D. 
Mathematics
Name the property illustrated by the statement.x ? y = y ? x
A. commutative property of multiplication B. inverse property of multiplication C. distributive property D. associative property of multiplication
Mathematics
Solve the problem.A wheel with a 21-inch diameter is turning at the rate of 30 revolutions per minute. To the nearest inch per minute, what is the linear speed of a point on the rim?
A. 2025 in. per min B. 2032 in. per min C. 1979 in. per min D. 1986 in. per min
Mathematics
Find the exact value of the expression. Do not use a calculator.csc 
- sec 
A. 3 B. -1 C. -3 D. 1
Mathematics