Trevor surveyed attendees at a comic book convention about the distance they lived from the convention center and the type of ticket they purchased for the event. The data he gathered is shown in the given two-way table. Tickets Bought for Comic Convention Live within 20 Miles of Convention Center Live Farther than 20 Miles from Convention Center One-Day Ticket 74 33 Multi-Day Ticket 18 12 How many people did Trevor survey?
Add all four groups in the table to find the total number surveyed: 74 + 33 + 18 + 12 = 137. Therefore, Trevor surveyed 137 people, which is choice D.
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