Answer:
yes it is
Step-by-step explanation:

Answer: The solution is x=7.
Step-by-step explanation: Using the segment addition posyulate we can find the measure of the segment. given it is 4, 5, 8.
The answer to your question
For this problem, I have to know the amount of distance to get to Room 117. If I do, I can give an exact answer to this problem. Through dimensional analysis, you have divide distance with speed to determine the time:
Time = Distance/Speed
Time = d/4
As long as you know the distance, when you substitute it to d in the equation, you can already answer the time.