Find the center and radius of the circle.x2 + y2 - 16x + 8y + 80 = 36
A. (-8, 4), r = 36
B. (-4, 8), r = 6
C. (8, -4), r = 6
D. (4, -8), r = 36
Answer: C
Mathematics
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Convert.39.40 dekameters = _____ meters
A. 3.94 B. 394 C. 0.394 D. 3940
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Solve the system by the addition method.2x2 + y2 = 66x2 + y2 = 41
A. {(5, 4), (5, -4), (-5, 4), (-5, -4)} B. {(5, 4), (-5, -4)} C. {(4, 5), (-4, -5)} D. {(4, 5), (-4, 5), (4, -5), (-4, -5)}
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Graph the function by starting with the graph of the basic function and then using the techniques of shifting, compressing, stretching, and/or reflecting.f(x) = -|x| 
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B. 
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