can shoplease show work. only a fewquestions the text box isn't working properly...so please show work, answer these questions! you'll be a huge help!

BUS Econ 4.2.8 5E Question Help ' A clothing company determines that its marginal cost, in dollars per dress, is given by the function below. The total cost of producing the rst 180 dresses is $?128. Find the cost of producing the 18151 through the 300th drese 4 C'{X)=Ex+54,forx5330 The total cost is sD. [Round to the nearest dollar as needed.) 4.2.21 ' 55 Question Help Approximate the area under the graph of x} = 0.03::4 2.25x2 + 85 over the interval [5,9] by dividing the interval into 4 eubintenrale. Use the left endpoint of each subintenral. The area under the graph afx] = ISL-113x4 - 2.25x2 + 35 over the interval [5.9] is apprmdmately :l. (Simplify your answer. Type an integer or a decimal.) 4.2.23 EEQuastian Help i I] Approximate the area under the graph of Fbt) = 0.833 + 8x2 0.81 3 ever the interval [ 3, 3] using 5 subintenrale. Use the left endpoints In nd the height of the rectangles. The area is approximately . [Type an integer or a decimal.)