Help me quickly please. Need it done tomorrow. 100 Points.

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

Solve for x and select the correct answer

In a sale there is 25% of all prices a chair costs £45 in sale how much was it before the sale