Convert the given equation to a rectangular equation.r = 
A. 5x2 - 4y2 - 30y - 25 = 0
B. 4x2 - 4y2 - 30y - 25 = 0
C. 4x2 - 5y2 - 30y - 25 = 0
D. 4x2 + 5y2 - 30y - 25 = 0
Answer: C
Mathematics
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A. -1, 0, 1 B. 4, 5, 6 C. 3, 4, 5 D. 5, 6, 7
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Find the expected value.A new light bulb has been found to have a 0.02 probability of being defective. A shop owner receives 500 bulbs of this kind. How many of these bulbs are expected to be defective?
A. 20 B. 100 C. 10 D. 500
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Graph the function. Show at least one period.y = 3 sin(?x + 3)
A. 
B. 
C. 
D. 
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Graph the parabola.8y = x2
A. 
B. 
C. 
D. 
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