Find the exact value of the expression.cos 
cos 
- sin 
sin 
A. 0
B. 1
C. -1
D. 
Answer: A
Mathematics
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Evaluate the integral.
A. 
+ C
B. 
+ C
C. 
+ C
D. 1
Mathematics
Find the domain of the composite function (g ? f)(x). Write the domain in interval notation.f(x) = 4x2 + 4x + 6, g(x) = 4x - 4
A. (-?, 0) ? (4, ?) B. (-?, 0] C. (-?, ?) D. [0, ?)
Mathematics
Find the indicated value of the given function. h(x) = 
, h(4)
A. 0
B. 
C. 15
D. Undefined
Mathematics
Solve.The average value of a certain type of automobile was $15,840 in 1995 and depreciated to $4620 in 1999. Let y be the average value of the automobile in the year x, where x = 0 represents 1995. Write a linear equation that models the value of the automobile in terms of the year x.
A. y = -2805x + 15,840
B. y = -2805x + 4620
C. y = - 
x - 4620
D. y = -2805x - 6600
Mathematics