Please help !! i need numbers 1 and 2

How can you decide witch operations to use to slice a two step equation

Marcus needs to rewrite f(x) = x2 + 6x + 4 in vertex form.

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