Solve the system. x2 - xy + y2 = 32x2 + xy + 2y2 = 12
A. {(1, 0), (-1, 0)}
B. {(2, 0), (-2, 0), (1, 0), (-1, 0)}
C. {(2, 1), (-2, -1), (1, 2), (-1, -2)}
D. {(2, 1), (1, 2)}
Answer: C
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The Acme Class Ring Company designs and sells two types of rings: the VIP and the SST. They can produce up to 24 rings each day using up to 60 total man-hours of labor. It takes 3 man-hours to make one VIP ring, versus 2 man-hours to make one SST ring.How many of each type of ring should be made daily to maximize the company's profit, if the profit on a VIP ring is $40 and on an SST ring is $30?
A. 10 VIP and 14 SST B. 14 VIP and 10 SST C. 14 VIP and 14 SST D. 12 VIP and 12 SST
Add or subtract. Express the answer as a mixed number.9
+ 5
A. 15
B. 3
C. 14
D. 15
Solve the right triangle shown in the figure. Round lengths to one decimal place and express angles to the nearest tenth of a degree. 
A = 32°, b = 49.9
A. B = 32°, a = 42.3, c = 31.2 B. B = 58°, a = 31.2, c = 58.8 C. B = 58°, a = 79.9, c = 94.2 D. B = 32°, a = 79.9, c = 42.3
Evaluate the indicated power of i.i50
A. -i B. -1 C. 1 D. i