M/3-6=-1 What is the answer help me fat

2-digit numbers less than 91 which are 1 less than a multiple of 10

Which of these tables represents a non-linear function?

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?