Elijah keeps track of when his baby sister’s shoe size increases. He notes that on a certain day her shoe size increases to 6½. Select all the true statements about the relation Elijah observes between his sister’s age, in days, and her shoe size. Here are the options. Choose all that apply:
The domain and range are restricted to positive numbers.
The domain and range are restricted to positive integers.
The relation is not a function.
The domain of the relation is continuous.
The domain of the relation is discrete.