Factor.x2 - x - 72
A. (x + 1)(x - 72)
B. (x + 9)(x - 8)
C. x2 - x - 72
D. (x + 8)(x - 9)
Answer: D
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Solve the problem.The motion of a spring-mass system is described by the equation 
where y is the distance in feet from the equilibrium position and t is time in seconds. If the weight is 18 feet from the ceiling in a state of equilibrium, find the starting position of the weight 
A. 12 ft B. 6 ft C. 36 ft D. 18 ft
Simplify by finding the absolute value.-
A. - 
B. - 4
C. 
D. 4
Evaluate the exponential function for the given value.f(x) = 3x, f(2)
A. 6 B. 9 C. 27 D. 8
The eccentricity is given of a conic section with one focus at the origin, along with the directrix corresponding to that focus. Find a polar equation for the conic section. e = 
, y = 5
A. r = 
B. r = 
C. r = 
D. r = 