A doctor prescribes 500 milligrams of medicine to treat an infection. Each hour following the initial dose, 85% of the
concentration remains in the body from the preceding hour
shown in the table. (This means 15% is being used by the
body every hour)

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.