What is the value of the expression 3-43?

Askate shop rents roller skates as shown on the table below. which graph and function models this situation?

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

Which is the focus of a parabola with equation y2=4x