Chase and his brother want to improve their personal information for when they start applying to colleges of their choice. To accomplish this they decide to head to salvation Army with delivering hot meal to senior citizens. About a month ago, they decided to keep track of how many successful delivery they have each completed. As of today, Chase has successfully deliver 18 out of the 30 meals to seniors citizens.

Part A - how many more meals with Chase have to deliver in a row in order to have a 75% says for delivery record? Justify your answer

Part B - How many more meals would Chase have to deliver in a row in order to have a 90% successful delivery record? Justify your answer.

Part C - After successfully delivering 18 out of 30 meals would Chase ever be able to reach 100% success for delivery record? Explain why or why not.