Your club is baking strawberry and apple pies for a bake sale. they need at most 18 pies, and cannot have more than 12 apple pies. write and graph a system of inequalities to model this system.

Astudy of 80 english composition professors showed that they spent, on average, 14.6 minutes correcting a student's term paper. construct and interpret a 90% confidence interval of the mean time for all composition papers. assume that the population standard deviation is 2.9 minutes. round to 1 decimal.