Solve the quadratic equation. Write the answer in simplest form.3(x + 6)2 + 15 = 51
A. {-6 + 2
i, -6 - 2
i}
B. {6 + 2
, 6 - 2
}
C. {6 + 2
i, 6 - 2
i}
D. {-6 + 2
, -6 - 2
}
Answer: D
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In order to answer the given question, which of the following types of study would be the most appropriate: an experiment without blinding, an experiment with single blinding, an experiment with double blinding, an observational study, or a case-control study?Are short women more likely to develop breast cancer than tall women?
A. Experiment with single blinding B. Observational study C. Experiment with double blinding D. Case-control study E. Experiment without blinding
Simplify the expression using the order of operations. 
A. 1.11 B. 9.15 C. 11.76 D. 1.66
Let 
, 
.
?
Perform the operation: 
.
?
A. 0?
B. 
?
C. 
?
D. 
?
E. not possible?
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