What is 1 plus 1 divided by 10 time 20plus 3

Me find the measure to side c and the process to solve the problem you appreciate it : )

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 graph: .

If a || b and e || f , what if the value of y ?