Arestaurant offered cooking classes on 24 of the 30 days in november. what decimal is equivalent to the fraction of days in november that classes were offered at the restaurant?

What can you determine about the solutions of this system

Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.

Which graph has a rate of change of zero