A candidate for mayor in the small town has allocated $40,000 for last minute advertising in days preceding election. Two types of ads will be used: radio and televison. Each and every radio ad costs $200 and reaches the estimated 3,000 people. Each and every television ad cost $500 and reaches an estimated 7,000 people. In planning advertising campaign, the campaign manager would like to reach as many people as possible, but she has stipulated that at least 10 ads of each type should be employed. Also, the number of radio ads must be at least as great as the number of television ads. How many ads of each and every type should be employed? How many people will this reach? Determine the solution using a graph.