What is the domain and range for y=3×-1

John bought 5 lemons and used 2 of them for a salad how much did he use for. a salad . he used % of the lemons.

Marina baked cookies. she gave 3/4 of the cookies to the scout bake sale. she shared the remaining 6 cookies with her friends. how many cookies did marina bake?

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10