Find the expected value.Mr. Cameron is sponsoring an summer concert. He estimates that he will make $300,000 if it does not rain and make $60,000 if it does rain. The weather bureau predicts the chance of rain is 0.34 for the day of the concert. What are Mr. Cameron's expected concert earning?
A. $300,000
B. $360,000
C. $60,000
D. $218,400
Answer: D
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Sketch the curve.25x2 - y2 - 8y = -9
A. 
B. 
C. 
D. 
Find the volume generated by revolving the region bounded by the given curves about the y-axis. Use the method of disks.x = 
, x = 0, y = 1, y = 4
A. 45?
B. 
?
C. 
?
D. 27?
Provide an appropriate response.L - 2C + 1.57(d + d) + 
will determine the length of a belt, L, that goes around two pulleys, where C is the distance between the centers of the pulleys, D is the diameter of one pulley, and d the diameter of the second pulley. Find the distance between the centers of the pulleys if the length of the belt is 82 in., the diameter of one pulley is 18 in., and the diameter of the other pulley is 8 in. Round to the nearest inch.
A. 19 inches B. 40 inches C. 41 inches D. 20 inches
Perform the indicated operations.9 ? 8 - 2
A. 74 B. 144 C. 54 D. 70