Solve the Problem $A ( x ) = 12 x ^ { 2 } - x$

question 217

Multiple Choice

Solve the problem.
-Elissa wants to set up a rectangular dog run in her backyard. She has 20 feet of fencing to work with and wants to use it all. If the dog run is to be x feet long, express the area of the dog run as a function of x.

• A) \(A ( x ) = 12 x ^ { 2 } - x\)
• B) \(A ( x ) = 9 x - x ^ { 2 }\)
• C) \(A ( x ) = 10 x - x ^ { 2 }\)
• D) \(A ( x ) = 11 x - x ^ { 2 }\)

---

Definitions:

Anticholinergic

Refers to substances or drugs that block the action of acetylcholine in the central and the peripheral nervous system, often used to treat a variety of conditions including gastrointestinal disorders and Parkinson's symptoms.

Neurotransmitter

A biochemical substance that transmits nerve impulses across a synapse.

Acetylcholine

A neurotransmitter involved in many functions including memory and muscle contraction.

Amygdala

A component of the brain's limbic system involved in emotion regulation, emotional memory, and reactions to fear and pleasure.