Whats your favorite subject? What grade?

Quick translate "x is 12 units from 20" into an equation. what are the values of x being described? if you can answer any of my other questions that'd be great too

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?

Oliver read for 450 minutes this month his goal was to read for 10% more minutes next month if all of her medicine go how many minutes will you read all during the next two months