Simplify the expression, if possible.
A. 16
B. 8
C. -8
D. Not an integer
Answer: D
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Find all solutions of the equation.2 cos x - 1 = 0
A. x = 
+ n? or x = 
+ n?
B. x = 
+ n? or x = 
+ n?
C. x = 
+ 2n? or x = 
+ 2n?
D. x = 
+ 2n? or x = 
+ 2n?
Identify the type of surface represented by the given equation.
+ 
- 
= 1
A. Hyperboloid of two sheets B. Elliptic cone C. Ellipsoid D. Hyperboloid of one sheet
Find the intersection.4x - 2y = 10, 9y + 5z = -10
A. x = -10t + 
, y = -20t - 
, z = 36
B. x = -10t + 70, y = -20t - 10, z = 36t
C. x = -10t + 
, y = -20t - 
, z = 36t
D. x = -10t - 
, y = -20t + 
, z = -36t
Find the volume and surface area of the figure. Use 3.14 as the approximate value of ?. Round your answer to the nearest tenth, if necessary.
A. V = 10,613.2 yd3 SA = 1898.1 yd2 B. V = 816.4 yd3 SA = 540.9 yd2 C. V = 2653.3 yd3 SA = 1081.7 yd2 D. V = 408.2 yd3 SA = 2694.1 yd2