What is the cube root(s) of -27

What value is a discontinuity of x squared plus 8 x plus 4, all over x squared minus x minus 6?

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

Simplify this expression. 8x 16(x + y)