Seven Hundred Gallons of 87-Octane Gasoline Is Obtained by Mixing $$\left\{ \begin{array} { l } x + y = 700 \\87 x + 90 y = 60,900\end{array} \right.$$

question 35

Multiple Choice

Seven hundred gallons of 87-octane gasoline is obtained by mixing 87-octane gasoline with 90-octane gasoline.Use a graphing utility to graph the two given equations.Let x and y represent the number of gallons of the 87-octane gasoline and 90-octane gasoline.As the number of gallons of the 87-octane gasoline increases,how does the number of gallons of the 90-octane gasoline change?​ $$\left\{ \begin{array} { l } x + y = 700 \\87 x + 90 y = 60,900\end{array} \right.$$ ​

• A)​ Increases
• B)​ Decreases
• C)​ Decreases
• D)​ Increases
• E)​ Decreases

---

Definitions:

Acyclovir

An antiviral drug used to treat infections caused by herpes viruses, including genital herpes, cold sores, shingles, and chicken pox.

Prostate-Specific Antigen

A protein produced by the prostate gland, elevated levels of which can indicate prostate cancer or other prostate-related conditions.

Benign Prostatic Hyperplasia

A condition in men where the prostate gland is enlarged, leading to discomfort and problems with urination.

Circumcision

A surgical procedure involving the removal of the foreskin from the human penis, often performed for religious or health reasons.