What is a double fact used to solve the problem 8+7

Can someone me and do the problem plz so i can understand it more better

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?

What number line represents the solution set for the inequality -1/2 greater than or equal to 4