How do you solve equations with like terms

Find the value of x. round the length to the nearest tenth

Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,

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?