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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Simplify and evaluate using a calculator.
A. 22; 22
B. 11
; 15.5563492
C. 11
; 15.5563492
D. 2
; 15.5563492
Solve the problem.A lake is stocked with 545 fish of a new variety. The size of the lake, the availability of food, and the number of other fish restrict growth in the lake to a limiting value of 3406. The population of fish in the lake after time t, in months, is given by the function P(t) = 
. After how many months will the population be 2405?
A. 7 mo B. 10 mo C. 12 mo D. 17 mo
Provide an appropriate response.If y = f(x) = ex2 + 3, find the (a) relative and (b) percentage rate of change of y when x = 0.5.
Fill in the blank(s) with the appropriate word(s).
Simplify the complex fraction.
A. 
B. 
C. 
D. 