Solve the System of Equations by the Substitution Method $\begin{aligned}- 2 x - 3 y & = - 21 \\x & = - 5 y\end{aligned}$

question 71

Multiple Choice

Solve the system of equations by the substitution method.
- $\begin{aligned}- 2 x - 3 y & = - 21 \\x & = - 5 y\end{aligned}$

• A) \(\{ ( 16 , - 3 ) \}\)
• B) \(\{ ( 15 , - 3 ) \}\)
• C) \(\{ ( 15,3 ) \}\)
• D) \(\{ ( - 3,15 ) \}\)

Identify strategies for preventing pregnancy and sexually transmitted diseases through barrier methods and hormonal contraceptives.

Understand the genetic implications of sexual and asexual reproduction.

Explain the hormonal control and processes of human reproductive systems.

Describe the mechanisms and biological significance of human development and conception.

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Definitions:

Times Interest Earned Ratio

A financial metric that measures a company's ability to meet its debt obligations based on its earnings before interest and taxes (EBIT).

Financial Statements

Formal records of the financial activities and condition of a business, person, or other entity, providing an overview of its financial performance and health.

Common Shares

Units of ownership in a public company, giving shareholders voting rights and a share in the company's profits, often through dividends.

Real Income

Income of individuals or nations after adjusting for inflation, reflecting the true purchasing power over time.