Convert y = -x^2+10x-24 from standard form to vertex form!

Using two or more complete sentences, describe how you can find a vector parallel to b=-2,3

Icould really use some with this question.

The annual snowfall in a town has a mean of 38 inches and a standard deviation of 10 inches. last year there were 63 inches of snow. find the number of standard deviations from the mean that is, rounded to two decimal places. 0.44 standard deviations below the mean 2.50 standard deviations below the mean 0.44 standard deviations above the mean 2.50 standard deviations above the mean