T=21and u =4 what is \sqrt(t+U)

If you are just building your payment history, how many points from a perfect score will you possibly miss?

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?