Write two different linear expressions that are equivalent (both expressions should be equal but not look the same and include at least one variable) and explain why they are equivalent.

Simplify using positive exponents only.

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.

Write the standard form of an equation with (see picture below)