Mira has breakfast at a restaurant. She leaves a
\[20\%\] tip of
\[\$1.80\].
What is the price of Mira's breakfast, before tip?
Let's denote the price of Mira's breakfast before tip as $x.
We know that the tip is 20% of the price before tip, so we have the equation:
0.2x = $1.80
To find x, we can divide both sides of the equation by 0.2:
x = $1.80 / 0.2
x = $9
Therefore, the price of Mira's breakfast before tip is $9. Answer: \boxed{9}.