Solve the problem.What is the domain of the cosine function?
A. all real numbers, except odd multiples of 
(90°)
B. all real numbers, except integral multiples of ? (180°)
C. all real numbers from -1 to 1, inclusive
D. all real numbers
Answer: D
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Find the hours, rate, or earnings as specified.
Find the number of regular hours, overtime hours (over 8 in a day), and overtime rate (time and a half).
A. 38, 0, $23.10 B. 32.5, 5.5, $23.10 C. 30, 8, $30.80 D. 32.5, 5.5, $30.80
Use the graph to find the vertical asymptotes, if any, of the function. 
A. x = -4, x = 4, y = 1 B. x = -4, x = 4, x = 0, y = 1 C. x = -4, x = 4 D. x = -4, x = 4, x = 0
Add.2p2q2 + 3p2q - 7pq and 7p2q2 - 2p2q + 7pq - 4
A. 9p2q2 + p2q - 4 B. 9p2q2 + 5p2q - 14pq - 4 C. 9p2q2 + p2q - 14pq - 4 D. 9p2q2 + 5p2q + 14pq + 4
Calculate 
, and 
when defined.
?
?
A. 
,
B. 
, 
C. 
,
D. 
, 
E. 
,