Establish the identity.(cos ? + sin ?)2 + (cos ? - sin ?)2 = 2(cos2? + sin2?)
What will be an ideal response?
(cos ? + sin ?)2 + (cos ? - sin ?)2 
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Find the requested probability.A box contains the following mixture of colored marbles: 2 black, 3 red, 2 yellow, and 1 green. What is the probability of drawing a red marble followed by a green marble if the two marbles are drawn without replacement?
A. 
B. 
C. 
D. 
Starbuck's current CEO is
A. Michael Dell B. Howard Schultz C. Anne Mulcahy D. Dennis Kozlowski
Express the radical in simplified form. Assume that all variables represent positive real numbers.
A. 2ab
B. -2a2b
C. 2
D. 2ab
Find an equation y = mx + b that models the quantity y after x units of time.A quantity y is initially -30 and increases at a rate of 4.3 per minute.
A. y = -4.3x - 30 B. y = -30x - 4.3 C. y = -30x + 4.3 D. y = 4.3x - 30