What is the value of x if the perimeter is 42cm

Which statements regarding the diagram are true? check all that apply.

Hi, can anyone show me how to do this problem? 100 points for this. in advance

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?