Establish the identity.
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What will be an ideal response?
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Solve the problem.Andy has 18 coins made up of quarters and half dollars, and their total value is $5.00. How many quarters does he have?
A. 16 quarters B. 21 quarters C. 4 quarters D. 2 quarters
An object attached to a coiled spring is pulled down a distance a from its rest position and then released. Assuming that the motion is simple harmonic with period T, write an equation that relates the displacement d of the object from its rest position after t seconds. Also assume that the positive direction of the motion is up.a = 18;
T = 4? seconds
A. d = -4 cos 
B. d = -18 sin 
C. d = -18 cos 
D. d = -18 cos 
Solve the triangle. Round side lengths and angle measures to the nearest tenth when necessary. 
A. A ? 106°, B ? 55.7°, C ? 18.3° B. A ? 120.4°, B ? 47.1°, C ? 12.5° C. A ? 138°, B ? 32.6°, C ? 9.4° D. A ? 112°, B ? 52.6°, C ? 15.4°
The following table shows the approximate average household income in the U.S. in 1990, 1997, and 2003. (t = 0 represents 1990.) t (Year) 0 7 13 H (Household Income in $1000) 30 37 43 ? Which of the following kinds of models would best fit the given data? (A, a, b, c, and m are constants.) ?
A. Power: 
B. Logarithmic: 
C. Linear: 
D. Quadratic: 
E. Exponential: 