Find an equation for the graph.
A. y = 
cos 
B. y = 
cos (4x)
C. y = cos (4x)
D. y = 
cos 
Answer: B
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Solve the system for x and y. Show your answer as an ordered pair, (x, y).x + 2y = 6-3x + 3y = 9
A. (1, 2) B. (-3, 0) C. (0, 3) D. Infinite solutions
The rectangular coordinates of a point are given. Find polar coordinates of the point. Express ? in radians.(2, -2
)
A. 
B. 
C. 
D. 
Provide an appropriate response.In a raffle 1000 tickets are being sold at $1.00 each. The first prize is $100, and there are 3 second prizes fo $50 each. By how much does the price of a ticket exceed its expected value?
A. $1.00 B. $0.75 C. $1.75 D. $50
Solve the problem.For what values of ? (0 ? ? < 2?) do maximum r-values occur on the graph of the polar equation 
Note that a maximum r-value occurs at a point that is the maximum distance from the pole.
A. 
, 
, 
B. 
, ?, 
C. 
, 
, 
, 
, 
, 
D. 
, 
, 