Which is a quadratic function

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

Solve: 3x+y=6 4x-2y=18 show all work !

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: .