A photographer sells his photographs for $20 each at an art show. He spent $185 to print the photographs and made a profit of $55 at
the art show. Write and solve an equation to find p, the number of
photographs sold.

I can solve it I just need to know how to set the equation up please.

How can you tell when x and y are not directly proportional?

Are the corresponding angles congruent? explain why or why not.

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.