Solve the systems of linear equations by graphing y=-5/2x-7 x+2y=4 what is the solution to the system of linear equations a. (-4.5,4.25) b. (-1.7,-2.8) c. (0,-7) d. (3,0.5)

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?