Alex has 21 marbles zach has 19 times as many marbles as alex how many marbles does zach have

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?

I’m really confused and need to learn this

Me i’m stuck on all these questions besides the two bottom ones