The manager of a department store in Seattle is attempting to decide on the types and amounts of advertising the store should use. He has invited representatives from the local radio station, television station, and newspaper to make presentations in which they describe their audiences. The television station representative indicates that a TV commercial, which costs $$15,000,$ would reach $25,000$ potential customers. The breakdown of the audience is as follows. what is the constraint that makes sure at least $30\%$ of the audience is female