solve 2c and 2d, 4 and 5. please show workings

() Find the exact x-intercepts 2) The graph of fix)= x3- 2x is given below. Use the graph off to answer! (@ what is f (-1) ? ( use the groph !) 4 (2 4 ) (6) f ( * ) = - 4, what is * ? ( -4 .1 ) Cover what interval is f decreasing? duse the graph to solve (approximate solutions when you need to @ 4 = X - 2 x 1-1 = X3-2x ( - 2-4 ) + (3 The profit, P(x) based on ( as a function of / interms of) , the selling price of an item is given by P(x) = -0.2x2+12x-100 * is in dollars P ( x] is in thousand dollars @ P(15) = 35. Write the associated ordered pair and interpret the meaning in context . 6) What should the selling price be to maximize the profit? What is the maximum profit ? ( Show Work ) 9(x ) = - v2x+ 3+ 1 @ Find the domain of g(x). @ groph 4 0 0) and give the range of goss (@ Find the x and y-intercepts if glx ) (di fixl = Vx. Write gix) in Terms of fix) and compare the graphs of fox ) and gox ) A farmer has 900 fr of fencing to enclose a rectangular region along a river. There will be no fence along the river but the region will be split Into 2 regions using some of the fence. See the diagram @ Express the enclosed area as a function of w( in terms of ' w ). what should the width and length be to maximize the area? what is the maximum area that can be enclosed