Solve.The weight that a horizontal beam can support varies inversely as the length of the beam. Suppose that a 5-m beam can support 160 kg. How many kilograms can a 1-m beam support?
A. 0.0313 kg
B. 0.0013 kg
C. 800 kg
D. 32 kg
Answer: C
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Solve the problem.Find cos 2?. sin ? = 
, ? lies in quadrant I.
A. 
B. - 
C. 
D. - 
Find the length of the third side of the right triangle. Give an exact answer and an approximation to three decimal places.
A. b = 
; b ? 12.490
B. b = 
; b ? 2.449
C. b = 
; b ? 18.868
D. b = 156
Solve the problem. Simplify the fraction, if possible.A salesman has organized his clients into groups according to their distance from his home. 
What fraction of the salesman's clients are less than 10 miles from his home?
A. 
B. 
C. 
D. 
Tell which of the following types of regression is likely to give the most accurate model for the scatter plot shown: linear regression, quadratic regression, cubic regression, exponential regression, sinusoidal regression.
A. Cubic regression B. Quadratic regression C. Linear regression D. Sinusoidal regression E. Exponential regression