Brian has 66 water bottles for the 5K race participants. In addition, he is planning to buy some boxes of water bottles that have 18 water bottles each. All of the boxes cost the same. Brian is not sure yet about the number of boxes of water bottles he wants to buy, but he has enough money to buy up to 5 of them. Write a function to describe how many water bottles Brian can buy. Let x represents the number of boxes of water bottles Brian buys. Find a reasonable domain and range for the function. PLS HELP!

Use the given degree of confidence and sample data to construct a confidence interval for the population mean mu . assume that the population has a normal distribution. a laboratory tested twelve chicken eggs and found that the mean amount of cholesterol was 185 milligrams with sequals 17.6 milligrams. a confidence interval of 173.8 mgless than muless than 196.2 mg is constructed for the true mean cholesterol content of all such eggs. it was assumed that the population has a normal distribution. what confidence level does this interval represent?