For the given polar equation, write an equivalent rectangular equation.r2 + 2r2sin ? cos ? = 441
A. x + y = ± 21
B. x + y = 21
C. x2 + y2 = 441
D. x2 + 3y2 = 441
Answer: A
Mathematics
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Cost: $35,000Recovery Period: 5-yearAfter: First Year
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A. {(8, 0), (-8, 0)} B. {(0, 8)} C. {(0, 8), (0, -8)} D. {(8, 0)}
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a. 
b. 
c. 
d. 
e. 
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Given the formula: 
V = 763.8, r = 4.Find h.
A. 
B. 
C. 
D. 
E. 
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