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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?
Choose 1 answer:
A Erica's vertical distance from the top of the valley was the same after she had walked 
2km and after she had walked 
T kilometers.
(B) After she had walked 
2km along the trail, Erica's vertical distance from the top of the valley was equal to 
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 
2km

Erica walked down a trail into a valley.\newlineV(d)V(d) models Erica's vertical distance from the top of the valley (in kilometers) after walking dd kilometers along the trail.\newlineWhat does the statement V(2)=TV(2)=T mean?\newlineChoose 11 answer:\newline(A) Erica's vertical distance from the top of the valley was the same after she had walked 22 km and after she had walked TT kilometers.\newline(B) After she had walked 22 km along the trail, Erica's vertical distance from the top of the valley was equal to TT kilometers.\newline(C) After she had walked TT kilometers along the trail, Erica's vertical distance from the top of the valley was equal to 22 km

Full solution

Q. Erica walked down a trail into a valley.\newlineV(d)V(d) models Erica's vertical distance from the top of the valley (in kilometers) after walking dd kilometers along the trail.\newlineWhat does the statement V(2)=TV(2)=T mean?\newlineChoose 11 answer:\newline(A) Erica's vertical distance from the top of the valley was the same after she had walked 22 km and after she had walked TT kilometers.\newline(B) After she had walked 22 km along the trail, Erica's vertical distance from the top of the valley was equal to TT kilometers.\newline(C) After she had walked TT kilometers along the trail, Erica's vertical distance from the top of the valley was equal to 22 km
  1. Function V(d)V(d): Understand the function V(d)V(d).\newlineThe function V(d)V(d) represents Erica's vertical distance from the top of the valley after walking dd kilometers along the trail. We need to interpret what V(2)=TV(2)=T means in this context.
  2. Interpret V(2)=TV(2)=T: Interpret V(2)=TV(2)=T.\newlineSince V(d)V(d) is the vertical distance after walking dd kilometers, V(2)V(2) is the vertical distance after walking 22 kilometers. The equation V(2)=TV(2)=T tells us that this distance is equal to TT kilometers.
  3. Correct answer: Choose the correct answer based on the interpretation.\newlineBased on our interpretation, the correct answer is:\newline(B) After she had walked 2km2\,\text{km} along the trail, Erica's vertical distance from the top of the valley was equal to TT kilometers.

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