Question

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.

Answer 1

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.

Answer 2

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.

Explanation:

A store sells notebooks for $3 each and does not charge sales tax.

Let x represents the number of notebooks Adele buys.

Let y represents the total cost of the notebooks she buys.

We can write the equation as:

`y=3x`

So, the best statement that describes the values of x and y is -

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.

Integer as the notebooks are in whole numbers.