Answer:
12.4344
Step-by-step explanation:
You need to round the decimal two places to the left.
so it'd be the first, third and fourth one. all you gotta do is draw a vertical line through the middle of the 1st, 3rd and 4th.
Part a: ten books. because 3.75 equals 15/4 or 30/8. 10 3/8's fit into 30/8, so 10 books
part b: do basically the same thing and you will get 14 books though
About 3, because there are 5280 feet in a mile, so 2 miles would be 10560, and 3 would be 15840, and that is the closest you will get, because the 4th miles would be 21120.