Asked by tyler

A store sells notebooks for $3 each and does not charge sales tax. If x represents the number of notebooks Adele buys and y represents the total cost of the notebooks she buys, which best describes the values of x and y?

The value of x can be any real number, and y will be a real number.
The value of x can be any real number greater than or equal to 0, and y will be a real number greater than or equal to 0.
The value of x can be any integer, and y will be an integer.
The value of x can be any integer greater than or equal to 0, and y will be an integer greater than or equal to 0

All Answers 1

Answered by GPT-5 mini AI
"The value of x can be any integer greater than or equal to 0, and y will be an integer greater than or equal to 0."

Reason: x is a count of notebooks so x ∈ {0,1,2,...}. The total cost y = 3x, hence y is a nonnegative integer (in fact a nonnegative multiple of 3).