Use Descartes' rule of signs to help list the possibilities for the nature of the solutions for the equation. Do not solve the equation.x5 - 11x4 + 14x3 - x2 + 6x - 1 = 0
A. 5 positive solutions
B. 5 positive solutions or 3 positive and 2 negative solutions or 1 positive and 4 nonreal complex solutions
C. 5 positive solutions or 3 positive and 2 nonreal complex solutions or 1 positive and 4 nonreal complex solutions
D. 3 positive solutions and 2 negative solutions or 3 positive and 2 nonreal complex solutions or 1 positive and 4 nonreal complex solutions
E. 2 positive solutions and 3 negative solutions or 3 negative and 2 nonreal complex solutions or 1 negative and 4 nonreal complex solutions
Answer: C
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Solve the equation in the complex number system.x2 + x + 2 = 0
A. {- 
- 
i, - 
+ 
i}
B. {
, 
}
C. {
, 
}
D. {
- 
i, 
+ 
i}
State the domain of the rational function.g(x) = 
A. (-?, ?) B. (-?, -3) ? (-3, ?) C. (-?, 2) ? (2, ?) D. (-?, 0) ? (0, ?)
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
Simplify.-(-4)
A. -5 B. 4 C. -4 D. 0