Write an expression that has four terms. your expression should have three different variables and a constant

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?

Two numbers have a sum of -19. one number is x. what expression represents the other number?

You’re ordering more thread for blue jeans co. you usually purchase from ted’s threads, which sells 12 thread spools for $27. you recently received a notice from wade's wares that says you can buy thread from them for $2.30 each for the first 2 dozen and $2 a spool thereafter. you need to order 5 dozen spools. what percentage can you save by going with wade’s wares?