...question number 1: The girls' and boys' basketball teams sponsored a car wash that made $109. There were twice as many girls as boys working, so a decision was made to give the girls twice as much of the money. How much money did each team make? Write a system of equations to solve this problem and round the answers to the nearest cent.
let x = amount of money each boy earned
2x = amount of money each girl earned
x + 2x = 109
question number 2 : In the relation shown below, (a) what is the domain and (b) what is the range?
what's the definition of domain and range?