Which is better to buy 12 bars of soap for $10.00 or 5 bars of soap for $4.00 is better which one

What is the area of the shaded sector?

What number produces an irrational number when multiplied by 1/4

Nielsen media research wants to estimate the mean amount of time (in minutes) that full- time college students spend watching television each weekday. find the sample size necessary to estimate the mean with a 15-minute margin of error. assume that a 95% confidence level is desired. also assume that the population standard deviation is known to be 112.2 minutes.