Explain your work from this question.

You live in a town where all the streets are laid out in a perfect grid. All streets run east and west, all avenues run north and south, and every one of them is named by its ordinal number. Your home is at the corner of 3rd and 3rd, and you work at the corner of 12th and 12 th. 1. What is the shortest possible route for you to get to work? blocks. 2. How many shortest routes can you choose from? routes. 3. It's your turn to bring donuts to the office. The donut shop is on the corner of 10th Ave. and 8th St. How many shortest routes can you take that will bring you by the donut shop? routes. 4. A water main break has forced the closure of 4th Ave. between 5th St. and 6th St. How many shortest routes can you now take to work? routes. 5. 4th Ave. has reopened, and a new donut shop has opened at the corner of 4th Ave. and 5th St. Now how many shortest routes can you take to work that will bring you past either (or both) of the two donut shops? routes