Solve the problem.The quadratic function 
models the median, or average, age, y, at which U.S. men were first married x years after 1900. In which year was this average age at a minimum? (Round to the nearest year.) What was the average age at first marriage for that year? (Round to the nearest tenth.)
A. 1964, 51.3 years old
B. 1936, 51.3 years old
C. 1953, 36 years old
D. 1964, 21.9 years old
Answer: D
Mathematics
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Write the equation of the ellipse that has its center at the origin, focus at 
and 
is one-half the length of the minor axis.
What will be an ideal response?
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Graph the function over a one-period interval.y = 
cos
A. 
B. 
C. 
D. 
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Classify the angle as acute, obtuse, straight, or right.
A. Acute B. Straight C. Obtuse D. Right
Mathematics
Determine whether or not the function is one-to-one.This chart shows the number of living relatives in five families. 
A. Yes B. No
Mathematics