Write down the initial simplex table for the following problem. Find the first pivot column and the first pivot. Do not complete the simplex algorithm.

A department store has up to 16000TL to spend on television advertising for sale. All ads will be placed with one television station. A 30-second ad costs 1000TL on daytime TV and is viewed by 14000 potential customers, 1800TL on prime-time TV and is viewed by 18000 potential customers, and 1500TL on late-night TV and is viewed by 14400 potential customers. The television station will not accept a total of more than 15 ads in all three time periods. How many ads should be placed in each time period in order to maximize the number of potential customers who will see the ads? How many potential customers will see the ads?