You've taken out a load for $5,000 for five years. The interest you'll be paying over the five years is $2,250. What interest rate are you paying? i need someone to please explain to me step by step how to do this thank you <3

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.