Question: Chapter 3 Equations and Inequalities in Two Variables 7. Water Pollution A wiláite biologist has determined in a House….

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Chapter 3 Equations and Inequalities in Two Variables 7. Water Pollution A wiláite biologist has determined in a House The R value of insulate a house is a measure of its ability to resist the linear function of its thickness in inches a t beat from the house. The R value of fiction is a A wildlife biologist has determined & Insulation in a House The R value of that a certain stream in New Hampshire can support 45,000 fish if it is free of pollution. She has estimated that for every toa of pollutants in the stream, 1500 fewer fish can be supported Express the fish p tion as a function Fx), where x is the number of toes of pollutants found in the stream. Obtain values of the function when x 0,x 10, and x 30. Grapt the population function. What is the significance of Px) when 30 of fiberglass insulation that is 6 inches thick ha type an R value of 19. The R value in general of this ty of insulation is n adding the result to -0.2. Express the R value of this insulativo as a function of x, the thickness in inches. Obtain ues of the function when x-ax-la-15 r-6 Graph the function. and Po) fa) Thickness (in inches) f(x) Graph each function fix) ra) fx) Graphing erupting, calcula Ca