Suppose that $c(x)=2x^3-16x^2+9,000x$ is the cost of manufacturing x items. Find a production level that will minimize the average cost of making $x$ items.

The production level that minimizes the average cost of making $x$ items is $x=$

$($Simplify your answer.$)$

At this level, the average cost of making $x$ items is $ $q,$

$($Simplify your answer.$)$

Answer both parts please