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. An insurance company is willing to insure the concert for $150,000 against rain for a premium of $30,000. If he buys this policy, what are his expected earnings from the concert?
A. $180,000
B. $300,000
C. $270,000
D. $239,400
Answer: D
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A. -18x + 16 B. -10x + 3 C. 10x D. -10x + 16
Solve the problem.The distance from home plate to dead center field in Sun Devil Stadium is 402 feet. A baseball diamond is a square with a distance from home plate to first base of 90 feet. How far is it from first base to dead center field?
A. 327.2 feet B. 470 feet C. 344.3 feet D. 379.6 feet
The graph shows the monthly revenue in millions of dollars of a growing company after the company doubled its advertising. Use the graph to solve the problem. 
How many months after the company doubled its advertising did the maximum monthly revenue occur.
A. 12 months B. 6 months C. 0 months D. 9 months
Find the length of the arc on a circle of radius r intercepted by a central angle ?. Round answer to two decimal places.r = 45 inches, ? = 35°
A. 28.78 inches B. 29.92 inches C. 27.49 inches D. 25.64 inches