Please help and please do not round finals answers

A Cake company uses 4,529 quart bottles of Chocolate sauce each year. The sauce costs 4 per bottle and is served only in full bottles for food safety purposes. The company's inventory manager calculated that each time an order is placed, it costs 15 and holding costs are 19 percent of the purchase price. Once the order is placed, it takes 4 weeks for an order to arrive. The company works for 49 weeks per year. The company is considering to use the inventory system techniques which minimizes the inventory cost. Suppose that things have become uncertain and that customer demand is no more constant. Customer demand is now normally distributed with mean being the same as given in the problem description and standard deviation (d)=31 units per week. The supply source is still very reliable and as a result the lead time is almost constant. Find out the safety stock needed to achieve 95% customer service level. (use the z table (normal distribution table) given on the study guides or in the textbook). Consider Std. Dev of lead time as 0 for uncertainty Question 7 2 pts A Cake company uses 4,607 quart bottles of Chocolate sauce each year. The sauce costs 5 per bottle and is served only in full bottles for food safety purposes. The company's inventory manager calculated that each time an order is placed, it costs 14 and holding costs are 20 percent of the purchase price. The company works for 46 weeks per year. The company is considering to use the inventory system techniques which minimizes the inventory cost. Now, suppose that customer demand is constant as given in the problem, but lead time is variable. Assume that the lead time is normally distributed with a mean ( L) of 2 weeks and standard deviation (LT)4 weeks. Find out the safety stock needed to achieve 95% customer service level. Question 8 2 pts A Cake company uses 4,747 quart bottles of Chocolate sauce each year. The sauce costs 5 per bottle and is served only in full bottles for food safety purposes. The company's inventory manager calculated that each time an order is placed, it costs 13 and holding costs are 21 percent of the purchase price. Once the order is placed, it takes 4 weeks for an order to arrive. The company works for 47 weeks per year. The company is considering to use the inventory system techniques which minimizes the inventory cost. Assume that both, lead time and customer demand are variable. Customer demand's standard deviation =27 units per week and standard deviation for lead time =2. Find out the safety stock needed to achieve 95% customer service level