Describe the curve represented by the equation. Identify the type of curve and its center (or vertex if it is a parabola).
+ 
= 1
A. Parabola, (-1, -2)
B. Ellipse, (-1, -2)
C. Parabola, (-2, -1)
D. Hyperbola, (-2, -1)
Answer: B
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Solve the problem.A force of 1300 lb compresses a spring from its natural length of 15 in. to a length of 14 in. How much work is done in compressing it from 14 in. to 7 in.?
A. 41,000 lb?in. B. 0.024 lb?in. C. 82,000 lb?in. D. 32,000 lb?in.
Solve the problem.The position of a particle moving along a coordinate line is s = 
with s in meters and t in seconds. Find the particle's acceleration at 
A. 
m/sec2
B. - 
m/sec2
C. - 
m/sec2
D. 1 m/sec2
Find the amplitude, period, or phase shift of the given function as requested.Find the phase shift of y = -5 sin
A. 
B. 
C. ?
D. 
Find parametric equations for the rectangular equation.y = 3x2 + 6
A. x = t; y = 3t2 + 6; 0 ? t < ?
B. x = ; y = 3t + 6; t ? 0
C. x = t2; y = 3t + 6; 0 ? t < ?
D. y = t; x = 3t2 + 6; 0 ? t < ?