Need with this!

solve the following system.

x^2 - y = 3
x - y = -3

the solution set:

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

Finding tbe values of the variables in each kite

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?