The marginal revenue and marginal cost functions of a campany are given by R'(q) = 300 – 10Vā and C (q) = 050, rands per unit, respectively. 500 0.5q+50' 3.1) What is the marginal profit at 100 units? 3.2) Find the total variable cost to produce 900 units. 3.3) Is producing 900 units profitable if C'(0) = R80000?

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