Sarah, Robert, and Brooke are in a running club. Three days a week after school, Sarah runs 2.2 miles each day. This week, Robert ran 58 of the total distance that Sarah ran. Also this week, Brooke ran 110% of the total distance that Sarah ran. What is the average distance the club ran this week?

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

Equation for the calculation double 2 and then add 5

Having a hard time understanding this question (see attachment).