Ebony earned scores of 72 70, 81, 99, and 88 on five math tests. Determine her score on the sixth test if her average for the six tests was 83? Enter your answer as a
whole number

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.