Hey guys i need how to do question 2 you

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

Find the midpoint m of z1=(8+5i) and z2=(12+3i)

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.