A local charity organization is planning a fundraising event. They have allocated $10,000 for advertising. There are three types of ads they can use: online ads, digital banners, and printed flyers. Each online ad costs $100 and reaches an estimated 400 people. Each digital banner costs $300 and reaches an estimated 1,800 people. Each flyer costs $1.00 and reaches an estimated 4 people. In planning the advertising campaign, the organizers would like to reach as many people as possible, but they have stipulated that at least 400 flyers must be printed. Also, the number of online ads must be at least three times as great as the number of digital banners. a. Formulate a