How are you suppose to do this?

If i have 20$ and i gave 5$ away how much i got

Need ! 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?

Determine if the outside temperature is a function of the time of day or if the time of day is a function of temperature and explain why or why not.