What is the answer? Help?

In two or more complete sentences, formulate how to use technology to calculate the appropriate regression model for the given data. you are not required to find the model, just choose the appropriate regression and explain how to use the technology. (-5,,2.,0.8), (0,-0.5), (2,-1.3), (3,-0.8), (5,2)

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

What is the total area of the figure?