Solve the equation.
= 4
A. 8, 40
B. 8, 40, 0
C. 8
D. 40
Answer: A
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Convert as indicated. Express the answer in decimal form when needed.6 inches per minute to inches per second
A. 360 in./sec B. 72 in./sec C. 180 in./sec D. 144 in./sec
Find the domain and range of the quadratic function whose graph is described.The maximum is -5 at x = -1
A. Domain: (-?, ?) Range: (-?, -5] B. Domain: (-?, ?) Range: (-?, -1] C. Domain: (-?, ?) Range: [-5, ?) D. Domain: (-?, -1] Range: (-?, -5]
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
Specify the center and radius of the circle.x2 + y2 + 12x - 18y + 53 = 0
A. center: (6, -9); radius: 64 B. center: (-9, 6); radius: 64 C. center: (9, -6); radius: 8 D. center: (-6, 9); radius: 8