Graph the system of linear inequalities.x - y ? -1x + 3y ? 19y ? 7
A. 
B. 
C. 
D. 
Answer: B
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Solve the problem.The motion of an imaginary ball bouncing along a flat, level surface, such that each bounce is identical in peak height and horizontal velocity to the bounce before it, is modeled by the following functional relationship between the instantaneous height, f(x), of the ball above the flat surface and the horizontal position, x, of the ball along the surface:
Find ao, two nonzero cosine terms (if they exist), and two nonzero sine terms (if they exist) of the Fourier series for this description of motion.
A. f(x) = 
- 4
B. f(x) = 
- 
C. f(x) = 
- 
D. f(x) = 
+ 
Graph the ellipse and label the center.
+ 
= 1
A. C(-8, 0)
B. C(0, -8)
C. C(8, 0)
D. C(0, 8)
Solve the problem.Suppose that the total profit in hundreds of dollars from selling x items is given by 
Find the marginal profit at x = 6.
A. -$1200 per item B. -$500 per item C. -$400 per item D. -$600 per item
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 velocity at 
A. 
m/sec
B. 
m/sec
C. - 
m/sec
D. 
m/sec