Solve the quadratic inequality by any method. Write your answer in interval notation.x2 < -6
A. (-?, 0)
B. No solutions
C. (-?, ?)
D. (0, 6)
Answer: B
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Use TRACE to find the value of y for the given value of x.y = -4x - 7x = -1
A. -3 B. 28 C. 6 D. -7
Answer the question.True or False: An equation of the type y = c (c is a constant) produces a line parallel to the 
A. False B. True
Perform the indicated operation. Assume that all variables are nonnegative.
? 
A. 6x B. 36x C. 6x2 D. 36x2
A variable force of magnitude F(x) moves a body of mass m along the x-axis from x1 to x2. The net work done by the force in moving the body from x1 to x2 is 
where v1 and v2 are the body's velocities at x1 and x2. Knowing that the work done by the force equals the change in the body's kinetic energy, solve the problem.A 2-oz tennis ball was served at 160 ft/sec about (109 mph). How much work was done on the ball to make it go this fast? (To find the ball's mass from its weight, express the weight in pounds and divide by 
the acceleration of
gravity.) A. 23 ft-lb B. 46 ft-lb C. 50 ft-lb D. 100 ft-lb