use goal seek

Recently a Casino started a campaign to attract more patrons to visit. On Monday night they would match the winning amount to an additional token amount of 2%. Alex won 1700 that night. 1-) Can you tell how much Alex would have walked out with after the token amount is added ? 2-) What happens to the overall amount if the token is increased to 5% ? what about 9%, 11%, 12% and 15% ? 3-) What happens if the amount Alex won that night was 7000$ ?" 4-) What happens if the amount won was $8200 ? and token was 1% , 5% , 7% and 9% ? 5-) How much amount Alex should win to walk away with $10,000 at a token rate of 22% ? (Goal Seek)