Sketch a graph of the function.
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Use the given information to find the exact value of the trigonometric function.cos ? = 
; The terminal side of ? lies in Quadrant IV.
Find cos 
.
A. 
B. 
C. - 
D. - 
For the given functions f and g, find the requested function and state its domain.f(x) = 16 - x2; g(x) = 4 - xFind f + g.
A. (f + g)(x) = -x2 + x + 12; all real numbers B. (f + g)(x) = 4 + x; {x|x ? -4} C. (f + g)(x) = x3 - 4x2 - 16x + 64; all real numbers D. (f + g)(x) = -x2 - x + 20; {x|x ? 4, x ? -5}
Events E and F are independent and Pr(F) ? 0. Which of the following must be true?
A. Pr(E ? F) = 0 B. Pr(E ? F) = Pr(E) + Pr(F) C. Pr(E|F) = Pr(F) D. Pr(E|F) = 0 E. none of these
Factor the polynomial as the sum or difference of two cubes.8 - x3
A. (2 + x)(4 - x2) B. (2 + x)(4 - 2x + x2) C. (2 - x)(4 + 2x + x2) D. (2 - x)(4 + x2)