PLz, help I really don't understand these problems at all.
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Pls! does anybody know a shortcut for answering these types of questions in the future?

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12

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