Provide an appropriate response.Suppose someone tells you that the cosine of the difference of two angles is the difference of their cosines. Write in your own words how you would correct the person's statement.
What will be an ideal response?
Wording will vary, but an acceptable response must adequately state the correct identity, which, in equation form, is 
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Find the domain of the given function f and find where it is increasing and decreasing, and also where it is concave upward and where it is concave downward. Identify all extreme values and points of inflection. Then sketch the graph of y = f(x). f(x) = 4-x
What will be an ideal response?
Find (f ?g)(x) for the given functions f(x) and g(x).f(x) = 3x + 5 and g(x) = 4x - 1
A. 12x + 2 B. 12x + 8 C. 12x + 19 D. 12x + 4
Use the even-odd identities to find the exact value of the expression. csc 
A. - 
B. -2
C. 
D. 2
Simplify. Combine like terms if possible.-6n2 - (-2n2)
A. -4n4 B. -4n2 C. 4n2 D. -8n2