Question

Lily hikes at least 1 hour but not more than 3 hours. She hikes at an average rate of 2.2 miles per hour. The distance Lily hikes in t hours is modeled by a function. p(t)=2.2tp(t)=2.2t What is the practical range of the function? all real numbers. all multiples of 2.2 between 2.2 and 6.6, inclusive. all real numbers from 1 to 3, inclusive. all real numbers from 2.2 to 6.6, inclusive.

Answer 1

average rate = distance / time

distance = average rate x time

Range of distance = 2.2(1) to 2.2(3) = 2.2 to 6.6

Required range is all real numbers from 2.2 to 6.6, inclusive.

Explanation:

Answer 2

average rate = distance / time
distance = average rate x time

Range of distance = 2.2(1) to 2.2(3) = 2.2 to 6.6

Required range is all real numbers from 2.2 to 6.6, inclusive.