Round the following to the nearest cent: $16.997

How do you solve a question like this?

The suare root of 9x plus 7 plus the square rot of 2x equall to 7

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?