Can someone give me the answers for this ?

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

Someone answer asap for ! 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?

Askate shop rents roller skates as shown on the table below. which graph and function models this situation?