Set up an equation that can be used to solve the problem. Solve the equation and determine the desired value.
A furniture store has a sale offering ​10% off of all furniture. If Amanda spent ​$360.99 on furniture before​ tax, what was the price of the furniture she purchased before the discount and before​ tax?

The equation is____. The cost of the furniture before the discount and tax is ​$____
​(Type an equation using x as the​ variable.)