Final answer:
The price of the least expensive item in the database, which is hamburgers, is $3.00 during Period 1.
Step-by-step explanation:
The question revolves around determining the price of the least expensive item in a database that contains prices of various goods. According to the information provided, hamburgers are the lowest-priced good in this database. The prices of hamburgers, as listed, are $3.00 in Period 1, $3.20 in Period 2, $3.10 in Period 3, and $3.50 in Period 4. Based on this data, the least expensive price for hamburgers, which is the lowest-priced item, is $3.00 during Period 1. This represents the price of the least expensive item in the database. The price of the least expensive item in the database can be found by looking at the column for 'Price' and identifying the lowest value. In this case, the lowest price is $3.00 for hamburgers in Period 1. Therefore, the price of the least expensive item in the database is $3.00.