Question

Erica walked down a trail into a valley. V(d) models Erica's vertical distance from the top of the valley (in kilometers) after walking d kilometers along the trail. What does the statement V(2) = t mean?

A. After she had walked 2 km along the trail, Erica's vertical distance from the top of the valley was equal to t kilometers.
B. Erica's vertical distance from the top of the valley was the same after she had walked 2 km and after she had walked t kilometers.
C. After she had walked t kilometers along the trail, Erica's vertical distance from the top of the valley was equal to 2 km.

Answer 1

The statement V(2) = t expresses Erica's vertical distance as t kilometers after walking 2 kilometers along the trail.

Step-by-step explanation:

The statement V(2) = t means that after Erica has walked 2 kilometers along the trail, her vertical distance from the top of the valley is t kilometers. This corresponds to option A: After she had walked 2 km along the trail, Erica's vertical distance from the top of the valley was equal to t kilometers. The function V(d) relates the distance walked, d, to the vertical distance from the start, V, so when d is 2 kilometers, the vertical distance V is t kilometers.