please answer 3,4 and 5

Required information [The following information applies to the questions displayed below) Odessa, Inc., manufactures one model of computer desk. The following data are available regarding units shipped and total shipping costs: Number of Units Month Shipped January 40 Tebruary 45 March 25 April 50 May 55 June 65 July 35 Total Shipping cost 52,950 2,800 2.100 3,350 3,300 3,900 2,000 Required: 2. Using the high-low method, calculate Odessa's total fixed shipping costs and variable shipping cost per unit. 4. Perform a least squares regression analysis on Odessa's data. 5. Using the regression output, create a linear equation (y + bx) for estimating Odessa's shipping costs. wa Complete this question by entering your answers in the tabs below. Required 3 Required 4 Required 5 Using the regression output, create a linear equation (y - obx) for estimating Odessa's shipping costs. Total Shipping Cost $ 48.57 Number of Units Shipped