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**MathIlliterate** I am suppose to list variables and give equations. I have six word problems in my homework that I can not seem to figure out I know that of at least 3 that have to use the supply and demand model and another one has to do with mixtures plus motion. I would truly appreciate the help Check them out below:

**1. A company budgets $30,000 for advertisement costs promoting a new product. Television ads cost $500 each and radio ads cost $100 each. If the company wants to buy a total of 220 ads, how many of each kind of ads should the company buy?**