Suppose you have a factory which make footballs. Costs you per month $  for factory opening, to pay your employees,  and for running machinery. Costs you $ for making of every football. Find the function formula that gives monthly cost as function of making no. of footballs?  Also, find the slope and what kind of rate of change is produced, gives its graphical representation and explain gives your remarks about the graph clearly. Where n is your arid number for example if your arid number is 19-arid-1234 then n=1234. ?