Could someone answer for me this question. Thank you inadvance

EXERCISE 3-6 High-Low M The following data relating Company, a wholesaler SF 3-6 High-Low Method; Scattergraph Analysis (LO2, L031 Tata relating to units shipped and total shipping expense have been assembled by Archer wholesaler of large, custom-built air-conditioning units for commercial buildings: Units Shipped Month January - February March April May June July Total Shipping Expense $1,800 $2,300 $1,700 $2,000 $2,300 $2,700 $1,200 Required: 1. Using the high-low method, estimate a cost formula for shipping expense. 2. The president of the company has no confidence in the high-low method and would like you to check your results using a scattergraph.. a. Prepare a scattergraph, using the data given above. Plot cost on the vertical axis and activity on the horizontal axis. Use a ruler to fit a straight line to your plotted points. Using your scattergraph, estimate the approximate variable cost per unit shipped and the approximate fixed cost per month with the quick-and-dirty method. nat factors, other than the number of units shipped, are likely to affect the company's total shipping expense? Explain