題組內容

1. Assuming that an entrepreneur's cubic total cost function is
$C = q^3 - 8.5q^2 + 14q + 60$, where $q$ is the output level. Please answer the following 3 questions:

(1) Determine the output level at which he maximizes profits if the price of q is 4 dollars per unit (e.g., p=4). (10%)