Question

Evelyn walks on a treadmill for at least 1 hour but not more than 2 hours. She walks at an average rate of 3.5 miles per hour. The distance Evelyn walks in t hours is represented by a function.



r(t)=3.5t



What is the practical domain of the function?

All real numbers.

All integers from 1 to 2, inclusive.

All real numbers from 1 to 2, inclusive.

All multiples of 3.5 between 3.5 and 7, inclusive.