The revenue, $\displaystyle {R}$, of producing and selling $\displaystyle {x}$ Awesome Hearing Aids is modeled by the equation

 $\displaystyle {R}=-{6}{x}^{{2}}+{50}{x}$

How many hearing aids need to be produced and sold in order to maximize the revenue? (Round to the nearest whole number.)

The revenue is at a maximum after hearing aids are produced and sold.

What is the revenue? (Round answer to the nearest cent.)

The maximum revenue is $ .