Solve the System by the Substitution Method $$\begin{array} { l } y = 10 x - x ^ { 2 } \\2 x - y = - 15\end{array}$$

question 39

Multiple Choice

Solve the system by the substitution method.
- $$\begin{array} { l } y = 10 x - x ^ { 2 } \\2 x - y = - 15\end{array}$$

• A) \(( 3,21 ) , ( 5,25 )\)
• B) \(( 3,5 )\)
• C) \(( - 3,9 ) , ( - 5,5 )\)
• D) \(( 5,25 )\)

---

Definitions:

Gills

The respiratory organs of aquatic animals that extract dissolved oxygen from water and release carbon dioxide.

Respiratory Gases

Gases involved in the process of respiration, primarily oxygen (O2) for inhalation and carbon dioxide (CO2) for exhalation.

Spiracles

Small openings on the surface of some animals, such as insects, that allow air to enter and exit the respiratory system.

Tracheal Tubes

Tracheal tubes are part of the respiratory system of certain invertebrates, including insects, providing direct exchange of air through the body.