The price of Stock A at 9 A. M. was $12.57. Since then, the price has been increasing at the rate of $ 0.11 each hour. At noon the price of Stock B was $. It begins to decrease at the rate of $ 13.32 each hour. If the two rates continue, in how many hours will the prices of the two stocks be the same?

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.