Linear Equation Word Problems - Examples & Practice

At a job you have, you get paid $\$100$ every day. Furthermore, you get $\$300$ for every car you sell, $\$50$ for every mattress, and $\$10$ for every box of Cheerios. (It's a really weird job don't question it.) Write an equation for $T$, the amount of money you could make in a day if you sell $x$ cars, $y$ mattresses, and $z$ boxes of Cheerios.