Answer:
Step-by-step explanation: According to the teacher, it's 11 miles.
I believe the way she got to the answer is isolating Coley town as being the base town and from there, we go 10 miles east and mark Midtown. Then from Coley town you go 7 miles west and mark that point. Cape city is 4 miles west of Midtown and you mark that point. Finally, you add 4 miles from the previous point plus 7 miles to Oak view and your answer is 11 miles.
Hope this helps and makes sense.