Two cups, two plates, and a pot cost $10.20 at a garage sale. A cup costs twice as much as a plate. The pot costs $3 more than a cup. What is the price of the pot? Explain how you got your answer.

Plate cost $X.

A cup cost $2X.
A pot cost $2X + 3

x + 2x + 2x+3 = $10.20
Solve for x.