The cost, $\displaystyle {C}$, of producing $\displaystyle {x}$ Totally Cool Coolers is modeled by the equation

 $\displaystyle {C}={0.005}{x}^{{2}}-{0.34}{x}+{15}$ 

How many coolers need to be produced and sold in order to minimize the cost? (Round to the nearest whole number.)

The cost is at a minimum after coolers are produced and sold. What is the cost? (Round answer to the nearest cent.)

The minimum cost is $ .