PLEASE HELP What is the equation of the graph below?

The given dot plot represents the average daily temperatures, in degrees fahrenheit, recorded in a town during the first 15 days of september. if the dot plot is converted to a box plot, the first quartile would be drawn at __ , and the third quartile would be drawn at link to the chart is here

What is the solution to the equation? k/6.4=8.7 2.3 5.568 15.1 55.68

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.