Is 21.01 greater or less than 21.012?

Write a fraction less than 1, which has a denominator of 6 and is greater than 3/4 plz answer !

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

State how many imaginary and real zeros the function has. f(x) = x3 - 20x2 + 123x - 216