Using the quadratic formula
Answer:
This can not be properly answered, because we do not have the length of each trail.
The first step here will be find the length, in miles, for each of the four trails.
As students choose all four trails, the number of miles that each student will bike is equal to the addition of the lenght of the four trails.
Suppose this number is N.
So each student bike N miles, and the company donates $1.75 per mile. Then the amount of money that a single student is N times $1.75, or N*$1.75
7 is the right answer your looking for.
Ir's 0.2
or two tenths.
You can tell because it's in the tenths digit place, right next to the decimal.
The answer to this problem is b.
