What is the inverse of the function f(x)=2x+1

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

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels

If wxyz is a square, which statements must be true?