Tell whether a linear model or a quadratic model is appropriate for the data. If a quadratic model is appropriate, then decide also whether the lead coefficient should be positive or negative.
A. Quadratic; leading coefficient negative
B. Quadratic; leading coefficient positive
C. Linear
Answer: B
Mathematics
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Find the annual straight-line rate of depreciation for the estimated life.70 years
A. 0.7% B. 70% C. 1.4% D. 0.1%
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Use Gaussian elimination to solve the linear system by finding an equivalent system in triangular form.
A. (0, 5, 0) B. no solution C. (0, 5, -5) D. (0, 0, 5)
Mathematics
Evaluate the absolute value.|-71|
A. 1 B. 0 C. 71 D. -71
Mathematics
Solve the problem.An object in simple harmonic motion has a frequency of 
oscillations per second and an amplitude of 3 feet. Write an equation in the form d = a sin ?t for the object's simple harmonic motion.
A. d = 3 sin 5?t
B. d = 3 sin 
C. d = 3 sin 
D. d = 3 sin 
Mathematics