Final answer:
Maura will have to walk a total distance of 21.5 feet.
Step-by-step explanation:
To find the total distance Maura will have to walk, we need to calculate the distances she needs to walk to her lab partner, her friend, and back to the water fountain line.
First, we need to find the distance between Maura and her lab partner. This distance is represented by the hypotenuse of a right triangle, with Maura's position as one of the legs and her lab partner's position as the other leg. Using the Pythagorean theorem, we can find the distance:
d = sqrt(9^2 + 3^2) = sqrt(90) = 9.5 feet (rounded to the nearest tenth).
Next, Maura needs to walk to her friend, which is a distance of 3 feet.
Finally, she needs to walk back to the water fountain line, which is the same distance as her initial position, 9 feet.
Therefore, Maura will have to walk a total distance of 9.5 + 3 + 9 = 21.5 feet (rounded to the nearest tenth).