Welp this is a few that a drew and its trash so bare with me

How do you find principle and simple interest

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?

Factor the polynomial. b^2 + 4b + 4