Elena is collecting bugs for her science project. She has already collected 18 bugs. She needs to collect two of each type of bug. She has to collect no more than 30 bugs. Which number line below shows the number of different bug types she has left to collect?

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.