1. Show & Sell can advertise its products on local radio and television (TV). The advertising budget is limited to $10,000 per month. Each minute of radio advertising costs $15 and each minute of TV commercials $300. Show & Sell likes to advertise on radio at least twice as much as on TV. In the meantime, it is not practical to use more than 400 minutes of radio advertising a month. From past experience, advertising on TV is estimated to be 25 times as effective as on radio. Show & Sell is interested in finding the optimum allocation of the budget to radio and TV advertising. Provide a linear programming model formulation only; you do not need to identify an optimal solution.