Hello I need help fast​

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 graph shown is the graph of which function?

Acd that is originally priced at $15.85 red-tagged for the sale. what is the sale price of the cd