Simplify
- $9 - 4 [ 9 - ( 9 + 4 ) ]$

question 98

Multiple Choice

Simplify.
- $9 - 4 [ 9 - ( 9 + 4 ) ]$

• A) 40
• B) \(- 20\)
• C) 25
• D) \(- 7\)

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Definitions:

Sound Waves

Vibrations that travel through air or another medium and can be heard when they reach a person's or animal's ear.

Otolith

Small calcified structures found in the inner ear of vertebrates, crucial for balance and hearing by detecting motion and orientation.

Middle Ear

A part of the ear that contains three small bones known as the ossicles, responsible for transmitting sound from the outer ear to the inner ear.

Auditory Nerve

A cranial nerve that transmits sound information from the cochlea of the inner ear to the brain.