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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.\newlineThe statement V(2)=TV(2)=T means that when Erica has walked 22 kilometers along the trail, her vertical distance from the top of the valley is TT kilometers. This is a direct application of the function V(d)V(d) where dd is replaced by 22.
  3. Eliminate incorrect choices: Eliminate incorrect choices based on the interpretation.\newline(A) This choice suggests that Erica's vertical distance is the same after walking 22 kilometers and TT kilometers, which is not what V(2)=TV(2)=T implies.\newline(B) This choice correctly interprets that after walking 22 kilometers, Erica's vertical distance from the top is TT kilometers.\newline(C) This choice incorrectly suggests that after walking TT kilometers, Erica's vertical distance is 22 kilometers, which is not stated by V(2)=TV(2)=T.

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