For a certain establishment, the total revenue function $R$ and the total cost function $C$ are given by \[ R = 83x - 4x^2 - 21 \quad \text{and} \quad C = x^2 - 12x + 48x + 11, \] where $x$ is the output. Obtain the output for which profit is maximum.
Show Hint
Understand the levels of management for effective delegation and decision making