Perform the indicated operation or operations. Simplify, if possible.
- 
A. 
B. 8y
C. 0
D. 
Answer: B
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Solve the problem.Suppose that R ={(x, y): 0 ? x ? 7, 0 ? y ? 7},R1 = {(x, y): 0 ? x ? 7, 0 ? y ? 6}, andR2 = {(x, y): 0 ? x ? 7, 6 ? y ? 7}. Suppose, in addition, that
dA = 7, 
dA = 9, and 
dA = 2.Use the properties of integrals to evaluate 
dA.
A. 9 B. 18 C. 11 D. 7
Write an algebraic equation and use it to solve the problem.The Four Flying Feldmans acrobat troupe is planning a nationwide tour. They will give 8 performances per week in various cities across the U.S. The venues in which they will perform hold about 6000 people each, and concert tickets will sell for $15 each. The advance expenses for each performance are $23,000, and the additional travel, lodging, meal, and miscellaneous costs are $35,000 per week. How many weeks will the Four Flying Feldmans need to be on tour if each of them wants to earn $4,008,000 from the tour?
A. 8 weeks B. 6 weeks C. 32 weeks D. 12 weeks
Use the Half-angle Formulas to find the exact value of the trigonometric function. sin 
A. 
B. - 
C. - 
D. 
Sketch the graph of the polar equation.r = 5 - cos ?
A. 
B. 
C. 
D. 