"() dollars per Carton R. O IR /50 100 150 Bop 250 cartons R3 Fromne 1.1. Consider Figure 1, which shows the rate of change of cost for an orchard in Florida at various production levels during grapefruit season. a) When is the cost of orchards increasing? b) For how many cartons produced is the cost maximum? Minimum? c) For how many cartons produced is the cost increasing most rapidly? 150 d) Interpret: ] c'(n)dn = 750. Include the units. 100