Solve the application by adding or subtracting appropriately.Trin's grocery bill was $9.53. He gave the clerk a $20 bill. How much change should he receive?
A. $9.53
B. $10.47
C. $10.46
D. $9.47
Answer: B
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Use a spherical coordinate integral to find the volume of the given solid.the solid between the sphere 
and the cardioid of revolution 
A. 
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B. 
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C. 
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D. 
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Solve the problem.Benjamin never has more than 21 hours free during the week. He is trying to make a weekly plan for dividing his free time between reading and working out. He wants to spend at least 8 hours per week reading. Write a system of inequalities to describe the situation. Let 
of time for reading and 
of time for working out.
A. x + y ? 21 x ? 8y x ? 0 y ? 0 B. x + y ? 21 x ? 8y x ? 0 y ? 0 C. x + y ? 21 x ? 8 y ? 0 D. x + y ? 21 y ? 8 x ? 0
Solve.x2 + 15 < 5x
A. (5, ?) B. (-?, -5) C. ? D. {5}
Use your graphing calculator to convert the complex number to trigonometric form. Round the angle to the nearest hundredth of a degree.
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A. 
B. ?
C. ?
D. ?
E. ?