Electronics manufacturer Electric-X found that the average cost C to produce × DVD/Blu-ray players can be found using the equation
C = 0.03x² − 6.18x + 700.
Use the equation to find how many DVD/Blu-ray players Electric- X should build in order to minimize cost and what is the minimum average cost.
A. The number of DVD/Blu-ray players that Electric-X should build to minimize cost is: ____.
B. The minimum average cost is: ____ dollars.