A particular article proposed a quadratic regression model to describe the relationship between x = degree of delignification during the processing of wood pulp for paper and y = total chlorine content.Suppose that the actual model is the following.y = 175 + 75x - 4x² + e(a) Mean chlorine content for x = 8 is ---Select--- V mean chlorine content for x = 10.(b) What is the change in mean chlorine content when the degree of delignification increases from 7 to 8?What is the change in mean chlorine content when the degree of delignification increases from 9 to 10?

Given y = 175 + 75x - 4x ^ 2 + e

A particular article proposed a quadratic regression model to describe the relationship between x = degree of delignification during the processing of wood pulp for paper and y = total chlorine content. Suppose that the actual model is the following. y = 175 + 75x - 4x² + c (a) Mean chlorine content for x = 8 is ---Select--- Vmean chlorine content for x = 10. (b) What is the change in mean chlorine content when the degree of delignification increases from 7 to 8? What is the change in mean chlorine content when the degree of delignification increases from 9 to 10?