Which situations can be modeled by a linear function? Car rental for $40 plus $0.25 per mile driven. B) New car worth $45,000 depreciates by 20% every year. C) 10 pound six week old puppy gaining 3 pounds each month, D) City with a population of 50,000 doubles every 10 years. E) Gym membership that costs $30 and then just $2 per visit.

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?