A store sells notebooks for 3 dollars 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 ?
Answer
A
The value of x can be any integer, and y will be an integer.
B
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 .
C
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 .
D
The value of x can be any real number, and y will be a real number.