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 multiples of 3.5 between 3.5 and 7, inclusive. all integers from 1 to 2, inclusive. all real numbers from 1 to 2, inclusive. all real numbers.