Find All Real Solutions of the Equation $| 7 x + 1 | = 7$

question 181

Multiple Choice

Find all real solutions of the equation. $| 7 x + 1 | = 7$

• A) \(x = - 8\) ,
• \(x = 8\)
• B) \(x = - \frac { 8 } { 7 }\) ,
• \(x = \frac { 6 } { 7 }\)
• C) \(x = - \frac {8 } { 7 }\) ,
• \(x = - 1\)
• D) \(x = - \frac { 7 } { 8 }\) ,
• \(x = \frac { 7 } { 6 }\)
• E) no solution

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Definitions:

Total Abnormal Return

The sum of the differences between the expected return on a security, based on a model like the CAPM, and the actual return over a specific period.

Bogey Portfolio

A benchmark portfolio against which the performance of an investment portfolio can be measured.

Bonds

Financial instruments representing loans made by an investor to a borrower, typically corporate or governmental, which are expected to be paid back with interest.

Sharpe Measure

An indicator of the performance of an investment compared to a risk-free asset, adjusted for its risk, calculated as the difference in returns divided by the standard deviation of the investment.