(6) Solve the equation 5 cos x=4-x. Make sure you find all solutions. x+x+x+x+2=0 (7) Solve the equation x + (8) Sketch the graphs of f(x)=x-7x+2x+20 and g(x) = x on the same set of axes and find their points of intersection. (9) Sketch the graphs of f(x)=x-7x+2x+20 and g(x) = x on the same set of axes and find their points of intersection. (10) For the data given below obtain a linear fit X Y 5 15.5 10 33.07 20 53.39 50 140.24 100 301.03