Whats different for the functions

Identify the number 127 as a rational or irrational. explain

The map shows the location of the airport and a warehouse in a city. though not displayed on the map, there is also a factory 112 miles due north of the warehouse. a truck traveled from the warehouse to the airport and then to the factory. what is the total number of miles the truck traveled?

If 3 3/4 lb. of candy costs 20.25 how much would 1lb. of candy cost