Ineed all the answers i suck at this

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.

The sum of five and a number n is at least 12

Amath club has 40 members. the number of girls y is 6 less than the number of boys. how many members are boys x? how many members are girls y?