By visual inspection, determine the best-fitting regression model for the data
plot below.

According to the data set, where should the upper quartile line of the box plot be placed?

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.

Which of the following circles have their centers in the third quadrant? check all that apply.