1) Check the sketch
2) Approximately 1.875 miles.
1) To answer this question, we need to sketch out this:
Note that the line has 9 marks, the 5th mark to the right is 1.25 miles away from the starting point, so we can write out dividing 2 by 8 as above.
2) To estimate how far Raven walked we need to locate the red dot since it is to the right of the mark we can state that Raven walked more than 1.75 and since the red dot is in the middle we can state:
1.75 + 0.25/2 = 1.875
3) Hence, the answers are:
1) Check the sketch
2) Approximately 1.875 miles.