Solve, finding all solutions.cos x = - 
(Express your answer in radians.)
A. 
+ 2k? and - 
+ 2k?, where k is any integer
B. 
+ 2k? and 
+ 2k?, where k is any integer
C. 
+ 2k? and 
+ 2k?, where k is any integer
D. 
+ 2k? and 
+ 2k?, where k is any integer
Answer: C
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Solve the problem.What is the size relationship between the mean and the median of a data set?
A. The mean can be smaller than, equal to, or larger than the median. B. The mean is always equal to the median. C. The mean is always less than the median. D. The mean is always more than the median. E. none of these
Find the requested characteristic.Graph f(t) = - cot 
t on the interval 
using dot mode. Identify where asymptotes occur in the graph.
A. t = 0 and t = ± ? B. t = 0 and t = ± 2? C. t = ± 2? D. t = ± ?
Solve the equation.
= 
A. {4} B. {3} C. {-4} D. {-12}
Determine the number of subsets of the set.A set of days of the week
A. 256 B. 124 C. 127 D. 128