Deriving the First-Order Condition for Utility Maximization
An agent's net benefit from an activity is represented by the function B(Q) = 400 + 90Q - 3Q², where Q is the level of the activity. To find the level of Q that maximizes this benefit, one must first derive the first-order condition. State the complete first-order condition for this function.
(Note: You are only required to state the condition, not solve for Q).
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