Simplify.13 + (-9)(-13) + (-9)
A. 121
B. 88
C. 277
D. 26
Answer: A
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Find the volume of the described solid.The solid lies between planes perpendicular to the x-axis at x = -
and x = 
. The cross sections are squares whose diagonals stretch from the x-axis to the curve 
A. 
?
B. 24?
C. 
?
D. 
?
An object moves in simple harmonic motion described by the given equation, where t is measured in seconds and d in meters . Find the maximum displacement, the frequency, and the time required for one cycle.d = 2 cos 5?t meters
A. displacement = -2 meters; period = 
seconds; f = 
oscillations/second
B. displacement = 2 meters; period = 
? seconds; f = 
oscillations/second
C. displacement = 2 meters; period = 
seconds; f = 
oscillations/second
D. displacement = 2 meters; period = 
seconds; f = 
oscillations/second
Rationalize
Graph the parabola.f(x) = 2x2 + 2x - 1
A. 
B. 
C. 
D. 