$11.25 per hour plus 6.5% commission on weekly sales. if worked 25 hours last week, and her weekly sales totaled $160, how much money did she earn last week in total?

The mean finish time was 185.52 with a standard deviation of 0.327 minute. the winning car driven by chris finished in 185.13. the previous year race had a mean finish time of 110.3 with a standard deviation of 0.106. the winning car that year driven by karen finished in 110.13 minutes. find their respective z-scores. chris - z-score karen “- z-score