Solve the problem.The position of a weight attached to a spring is s(t) = -9 cos 12?t inches after t seconds. What is the maximum height that the weight reaches above the equilibrium position and when does it first reach the maximum height?
A. The maximum height of 9 inches is first reached after 6 seconds.
B. The maximum height of 18 inches is first reached after 3 seconds.
C. The maximum height of 18 inches is first reached after 6 seconds.
D. The maximum height of 9 inches is first reached after 0.08 seconds.
Answer: D
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The data in the figure below represents the annual salaries of 200 professional musicians.
The kind of graph shown above is called
A. a box plot. B. a frequency table. C. a histogram. D. a bar graph. E. none of these
Solve the right triangle.
a = 20.9, b = 25.6
A. A = 50.8, B = 39.2, c = 33 B. A = 35.3, B = 54.7, c = 14.8 C. A = 39.2, B = 50.8, c = 14.8 D. A = 39.2, B = 50.8, c = 33
Evaluate each expression without using a calculator. Give the result in degrees.sin-1 
A. 60° B. 45° C. 135° D. 120°
The lengths of the legs of a right triangle are given. Find the hypotenuse.a = 24, b = 7
A. 625 B. 25 C. 5 D. 20