Find the volume.Find the volume of the solid generated by revolving the region under the curve 
in the first quadrant about the y-axis.
A. 4?
B. 1?
C. 2?
D. 2?3
Answer: C
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Reverse the order of integration and then evaluate the integral.
A. 20 B. 18 C. 14 D. 12
Factor completely. If unfactorable, indicate that the polynomial is prime.(x - 9)2 - 16
A. (x - 5)(x - 13) B. (x + 5)(x + 13) C. (x + 7)(x - 25) D. (x - 13)2
Solve the problem.The half-life of radium is 1690 years. If 150 grams is present now, how long (to the nearest year) till only 100 grams are present?
Fill in the blank(s) with the appropriate word(s).
Solve the problem. Round your answer to the nearest tenth unless indicated otherwise.A sewing teacher is buying rick-rack so her 7th grade students can trim aprons that they have made. She has 38 students and each apron requires 43 inches of trim. How many meters of rick-rack will she have to buy so that each student can trim one apron? Round to the nearest hundredth of a meter.
A. 1470.6 m B. 415.04 m C. 41.5 m D. 147.06 m