What 1 + 2 i have know idea of what it is

Asap 25 pts + brainliest to right/best answer

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

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.