Write an inequality involving the variable x that describes the set of numbers graphed.
A. -6 < x < -2
B. -6 < x ? -2
C. -6 ? x < -2
D. -6 ? x ? -2
Answer: C
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Solve the problem.The position(in feet) of an object oscillating up and down at the end of a spring is given by 
at time t (in seconds). The value of A is the amplitude of the motion, k is a measure of the stiffness of the spring, and m is the mass of the object. Find the object's velocity at time t.
A. v = - A
cos 
ft/sec
B. v = A
cos 
ft/sec
C. v = A
cos 
ft/sec
D. v = A cos 
ft/sec
Convert the given degree measure into degrees, minutes, and seconds of arc.66.13°
A. 66°7'48" B. 66°17'48" C. 66°7'38" D. 66°17'38"
Solve the inequality and graph the solution.-21r + 9 ? -3(6r - 8)
A. r ? -5 
B. r < -5 
C. r > -5 
D. r ? -5 
Divide. Express the quotient in lowest terms.
÷ 
A. 
B. 
C. 
D. 2y4z5