Can some one help me i have no idea how to do this

Which of the following properties can be used to show

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

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x