Final answer:
The variable expression that represents the quotient of 19 times a number and 24 is 24x * 19.
Step-by-step explanation:
The variable expression that represents the quotient of 19 times a number and 24 is option B) 24x • 19.
To understand why,
let's break down the expression. '19 times a number' can be written as 19x, and 'divided by 24' can be written as • 24.
Therefore, the complete expression is 24x • 19.