Answer:
h(1) = 1
h(4) = 5
Step-by-step explanation:
Since 1 is in the interval 1 ≤ x ≤ 3, you must substitute 1 into the expression 
So, h(1) =
= 1
Since 4 is in the interval x > 3, and all values of x > 3 gives an output of 5, then h(4) = 5
A 16 1/2 pound rock is 6 more pounds heavier than a 10 1/2 pound rock.
We'll take 1.25 miles as one minute (x) and take 100 as total distance (D) while T is the time it took to reach that distance.
T = D/x
putting the values in
T = 100/1.25
T = 80
80 minutes is the answer.