Original shirt cost $55. current shirt cost $40 find the percent of decrease

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?

The price of a car has been reduced from $19,000 to $11,590. what is the percentage decrease of the price of the car?

What rule describes a dilation with a scale factor of 4 and the center of dilation at the origin?