Answer:2.5 cups
Step-by-step explanation:
Given
Rosanne runs 6 miles in an hour
If she drinks 0.5 cups of water every
of an hour
So in 1 hour Rosanne drinks 1.5 cups
So, for 6 miles Rosanne drinks 1.5 cups
i.e. For 
for 

I believe its c because that is the suitable answer
Move all terms to the left side and set equal to zero. Then set each factor equal to zero.
x=10,−1
Point E is the correct answer! :D