Please help me I need ASAP

Which expression is rational? 6. , square root two, square root 14, square root 49

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?

What is the value of n in the equation -1/2(2n+4)+6=-9+4(2n+1)