Three students are sitting on a school bus. Sidney is 4 meters directly behind Quinn and 3 meters directly left of Ayana. Sidney makes a paper airplane and throws it to Quinn. Quinn throws the airplane to Ayana, who throws it back to Sidney. How far has the paper airplane traveled?

The bottom of ignacio's desktop is 74.5cm from the floor. ignacios sits in his adjustable chair, and the tops of his legs are 49.3cm from the floor. each clockwise rotation of the knob on the chair raises ignacio's legs by 4.8cm. write an inequality to determine the number of clockwise rotations, r, ignacio could make with the knob without his legs touching the desk.