Find the exact value of the expression.cos (45° - 30°)
A. 
B. 
C. 
D. 
Answer: A
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Solve the problem.Find the tangent line(s) at the pole for the curve 
A. ? = 0 (y = 0), ? = 
[y = (tan
)x], ? = 
[y = (tan
)x]
B. ? = 
[y = (tan
)x], ? = 
(x = 0), ? = 
[y = (tan
)x]
C. ? = 0 (y = 0), ? = 
[y = (tan 
)x], ? = 
[y = (tan 
)x], ? = 
[y = (tan 
)x], ? = 
[y = (tan 
)x]
D. ? = 
[y = (tan 
)x], ? = 
[y = (tan 
)x], ? = 
(x = 0), ? = 
[y = (tan 
)x], ? = 
[y = (tan 
)x]
Write the repeating decimal using an ellipsis.5.
A. 5.308308308 . . . B. 5.380380380 . . . C. 5.38383838 . . . D. 5.038038038 . . .
Evaluate the exponential function at the specified value of x.f(x) = 
x, x = -2
A. 25
B. -10
C. - 
D. 
Determine the intervals on which the function is increasing, decreasing, and constant.
A. Increasing on (-?, -1); Decreasing on (-1, ?) B. Increasing on (-1, ?); Decreasing on (-?, -1) C. Increasing on (-1, ?); Decreasing on (-1 ?) D. Increasing on (-?, -1); Decreasing on (-?, -1)