Answer:
Aria's vertical distance from the top of the valley is less than 3 km when it traveled 3km along the trail
Explanation:
we are given
v(d) models Aria's vertical distance from the top of the valley (in kilometers)
after walking d kilometers along the trail
v(3) means d=3
so, it traveled 3km along the trail
v(d)=3 means Aria's vertical distance from the top of the valley is 3km
so,
It means that
Aria's vertical distance from the top of the valley is less than 3 km when it traveled 3km along the trail