How to show the number 38 in three different ways

Based on what i know about mean, this doesn't add up.

Question part points submissions used suppose that 100 lottery tickets are given out in sequence to the first 100 guests to arrive at a party. of these 100 tickets, only 12 are winning tickets. the generalized pigeonhole principle guarantees that there must be a streak of at least l losing tickets in a row. find l.

Which is f(5) for the function –2x2 + 2x - 3?