Given a total cost function, TC(Q) = Q 2 + 10Q + 100 where Q represents quantity of output produced. (i) Find the expressions for the variable cost, fixed cost, average cost, average variable cost, and average fixed cost. 5 (ii) At what output level (Q) is the average cost lowest? Also find the minimum average cost.

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Given a total cost function,
TC(Q) = Q
2 + 10Q + 100
where Q represents quantity of output produced.
(i) Find the expressions for the variable cost, fixed cost, average cost, average variable cost,
and average fixed cost. 5
(ii) At what output level (Q) is the average cost lowest? Also find the minimum average cost.

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