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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Solve the problem. Round your answer to the nearest tenth unless otherwise indicated.Joe's Discount claims that of its 5975 items in inventory, 5373 items are clothes, while the rest are non-clothes. What percent of total inventory is non-clothes? Round to the nearest tenth of a percent.
A. 10.1% B. 89.9% C. 0.9% D. 9.9%
Solve the logarithmic equation.log2(x - 3) + log2(x - 9) = 4
A. {11} B. {1} C. {12} D. {11, 1}
Find the zeros of f(x), given that one zero is k.f(x) = x3 + 4x2 - 5x - 20
k = -4
A. -
, ±5
B. -
, ±
C. -4, ±5
D. -4, ±
Let U = {all soda pops}; A = {all diet soda pops}; 
and 
Describe the given set in words.C' ? D'
A. All caffeinated soda pops in cans B. All soda pops that are not in cans or caffeine-free C. All soda pops that are not in cans or are caffeinated. D. All caffeinated soda pops not in cans