Simplify the expression.cos x (csc x - sec x) - cot x
A. 1
B. 0
C. -1
D. cos2x - tan2x
Answer: C
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Simplify the expression by combining any like terms.2z - 12z + z
A. -10z B. -9z C. -10z + z D. -11z
Graph the quadratic function using its vertex, axis of symmetry, and intercepts.f(x) = x2 - 8x + 7
A. vertex (-4, 9)
intercepts (-7, 0), (- 1, 0), (0, -7)
B. vertex (4, 9)
intercepts (7, 0), (1, 0), (0, -7)
C. vertex (-4, -9)
intercepts (-7, 0), (- 1, 0), (0, 7)
D. vertex (4, -9)
intercepts (7, 0), (1, 0), (0, 7)
With your calculator set to radian mode and polar graphics capability, graph the following function in the window specified.r = 2 - 2 sin ?, -2? ? ? ? 2?, [-4, 4] by [-4, 4]
A. 
B. 
C. 
D. 
The function f is one-to-one. Find its inverse.f(x) =
A. f-1(x) = x3 + 4
B. f-1(x) = 
C. f-1(x) = x3 - 2
D. f-1(x) = x - 2