The letters x and y represent rectangular coordinates. Write the equation using polar coordinates (r, ?).xy = 1
A. 2r sin ? cos ? = 1
B. 2r2 sin ? cos ? = 1
C. r2 sin 2? = 2
D. r sin 2? = 2
Answer: C
Mathematics
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Evaluate the integral.
A. 1440 B. 960 C. 160 D. 480
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Solve. Simplify the answer.The total length of a bicycle race is 
of a mile. Chloe has completed 
of a mile. How much does she have left to complete?
A. 
mi
B. 
mi
C. 
mi
D. 
mi
Mathematics
Evaluate the expression x - y for the given values of the variables.x = -15, y = 39
A. -24 B. 54 C. 24 D. -54
Mathematics
Provide an appropriate response.A restaurant bill of $75.72 was shared equally by 3 people. How much was each person's share? Round to the nearest cent.
A. $26.35 B. $25.24 C. $26.24 D. $25.35
Mathematics