Use the given information to find the exact value of the expression.sin ? = 
, ? lies in quadrant I
Find cos 2?.
A. - 
B. 
C. 
D. - 
Answer: D
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Use the discriminant to find what type of solutions (two rational, two irrational, one rational, or two nonreal complex) each of the following equations has. Do not solve the equation.2x2 = -2x - 4
A. two irrational solutions B. one rational solution C. two nonreal complex solutions D. two rational solutions
Factor.3x2 - 20x - 32
A. (x - 4)(x - 8) B. (3x + 4)(x - 8) C. (4x + 3)(x - 8) D. (x + 3)(x - 8)
A card is drawn randomly from a standard 52-card deck. Find the probability of the specified event. The card is a king.
A. 
B. 
C. 
D. 
Solve the problem.Elissa wants to set up a rectangular dog run in her backyard. She has 22 feet of fencing to work with and wants to use it all. If the dog run is to be x feet long, express the area of the dog run as a function of x.
A. A(x) = 12x - x2 B. A(x) = 11x - x2 C. A(x) = 10x - x2 D. A(x) = 13x2 - x