total revenue function may be modelled by TR = aQ + bQ 2 . (a) If TR

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total revenue function may be modelled by TR = aQ + bQ2.

(a) If TR = 14 when Q = 2 and TR = 9 when Q = 3, write down a pair of simultaneous equations for the parameters a and b.

(b) Use Cramer’s rule to solve the equations in part (a) and hence find the total revenue when Q = 1.

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