The cost, in rupees, of manufacturing n toy cars in a small workshop is modelled by the polynomial C(n)=n3−6n2+11n+10.
(i) Calculate the cost of manufacturing 4 toy cars.
(ii) A break-even point occurs when the cost is zero. Evaluate C(n) at n=1,2 and 5 to find for which of these production levels, if any, the workshop breaks even.
(iii) Write one sentence interpreting the result obtained in part (ii) for the workshop owner.