Evaluate the expression for the given values.
x = 1; y = -1
A. -5
B. - 
C. - 
D. -3
Answer: B
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Change the number to polar form and then perform the indicated operations. Express the result in rectangular form.(2 - 2j)5
A. -64
+ 64
j
B. -64 + 64j
C. -128 + 128j
D. - 
+ 
j
Plot the point in the rectangular coordinate system.(1, -5)
A. 
B. 
C. 
D. 
Find the exact value of the expression.cos 
cos 
- sin 
sin 
A. 0
B. 1
C. -1
D. 
Solve the problem.The cost of a tourist package depends on the number of sightseeing stops that you have. The ordered pair 
means that 3 stops cost $150, and the ordered pair 
means that 6 stops cost $210.a) Write a linear equation giving the cost, y, in terms of the number of stops x.b) Using the equation found in part a, find how much it costs for 3 stops.c) How many stops would there be if the cost is $310?
A. y = 20x + 90; $150; 11 hours B. y = 20x + 90; $150; 13 hours C. y = 20x + 90; $150; 10 hours D. y = 20x + 90; $150; 12 hours