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. 1954, 36 years old
B. 1936, 51.1 years old
C. 1960, 22.3 years old
D. 1960, 51.1 years old
Answer: C
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Determine the correct exponential function of the form f(x) = bx whose graph is given.
A. f(x) = 4x
B. f(x) = 
x
C. f(x) = 16x
D. f(x) = 
x
Complete the ordered pairs for the equation.3x + y = -19 (-7, ) (0, ) (1, )
A. (-7, 2) (0, 0) (1, -22) B. (-7, -7) (0, -19) (1, -22) C. (-7, 2) (0, -19) (1, -22) D. (-7, 2) (0, -23) (1, -22)
Solve the problem.The time T necessary to make an enlargement of a photo negative varies directly as the area A of the enlargement. If 48 seconds are required to make a 3-by-4 enlargement, find the time required for a 7-by-10 enlargement.
A. 350 sec B. 280 sec C. 210 sec D. 420 sec
Rearrange the numbers using any order and grouping so that you can perform the addition as quickly as possible.9 + 4 + 1 + 6 + 8
A. 12 B. 20 C. 18 D. 28