Find the domain and range of the relation given to the right. please help

The median of a data set is the measure of center that is found by adding the data values and dividing the total by the number of data values that is the value that occurs with the greatest frequency that is the value midway between the maximum and minimum values in the original data set that is the middle value when the original data values are arranged in order of increasing (or decreasing) magnitude

Jim had 15 minutes to do 5 laps around his school what would his time be

Ratio of circumference to diameter example plz i need to now what it looks like.