Help me please I am not sure about the answer

Find the balance at the end of 4 years if 1000 is deposited at the rate of

The total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.