Five thousand raffle tickets are to be sold at $10 each to benefit a local community group. The prizes, the number of each prize to be given away, and the dollar value of winnings for each prize are as follows:

Prize Number to Be
Given Away Dollar Value
Automobile 1 $20,000
Entertainment center 2 3,000 each
DVD recorder 5 400 each
Gift certificate 50 20 each

If you buy one ticket, calculate your expected winnings. (Form the probability distribution of x = your dollar winnings, and remember to subtract the cost of your ticket.)(Round your answer to 2 decimal places. Negative amounts should be indicated by a minus sign. Omit the "$" sign in your response.)