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. 1957, 23.2 years old
B. 1954, 36 years old
C. 1957, 50.2 years old
D. 1936, 50.2 years old
Answer: A
Mathematics
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Sketch the surface z = f(x,y).f(x, y) = 5
A.
B.
C.
D.
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Write the standard equation for the circle.Center (24, 16), passing through (0, 16)
A. (x - 24)2 + (y - 16)2 = 576 B. (x - 24)2 + (y - 16)2 = 24 C. (x - 16)2 + (y - 24)2 = 576 D. (x - 16)2 + (y - 24)2 = 24
Mathematics
Find the requested composition of functions.Given f(x) = 6x + 12 and g(x) = 2x - 1, find (f ? g)(x).
A. 12x + 23 B. 12x + 6 C. 12x + 18 D. 12x + 11
Mathematics
Solve.1000 ? y = 9.0388
A. 0.090388 B. 903.88 C. 0.0090388 D. 9038.8
Mathematics