Answer for some points

Answer:
9.4 miles
Step-by-step explanation:
31 subtract 10.8 twice and that's your answer
Answer: w = 9.4 Miles
Step-by-step explanation: If you add the two 10.8's together you get 21.6, then subtract the 21.6 by 31 to get your final answer of 9.4.
My apologies if its wrong.