The Westchester Chamber of Commerce periodically sponsors public service seminars and programs. Currently, promotional plans are under way for this year$$s program. Advertising alternatives include television, radio, and online. Audience estimates, costs, and maximum media usage limitations are as shown: Icon Constraint Television Radio Online Audience per advertisement $100,00018,00040,000$ Cost per advertisement $$2000$ $$300$ $$600$ Maximum media usage $102010$