What expression must be subtracted from 2x-3y+z to give 3x+2y?

Plz me plz i will give a brain just plz

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?