Acompany has an annual demand. M. for 4500 items. The company produces the items in equal batches at regular intervals throughout the year. The set-up cost,f. for a production run is R9.00. The manufacturing cost.g, is R100 per item. The storage cost. k, for one item per year is R10,00. If the total annual cost to produce the x batches per year is given by the function M T = M k (m) fa: +9 + 2.1: then in order to minimise the total annual cost. a batch of items should be produced every type your answer... days. {round your answer to one decimal point} throughout the year