Shawna earns $10 per hour babysitting her neighbors. One Saturday she got Jill to assist her for 40% of everything she earns. That Saturday Shawna earned her regular hourly wages, as well as a $15 bonus Write two equvilant expressions that represent how much jill will get by assisting Shawna on Saturday.

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.