Alike jump roped for 20 mins she stopped at 8: 05 when did she start jumping

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”?

During a wright loss challenge your friend goes from 125 pounds to 100 pounds.what was the percent weight loss

Which of the following parabolas opens up?