Cool-It Company is a wholesaler of custom-built air conditioning units for commercial buildings. The data below show the number of units shipped and the total shipping expenses for the past eight months. Number of Units Total Shipping Month Shipped Expenses January February March April May June July August 36457821 $3,600 $4,600 $3,400 5 $4,000 $4,600 $5,400 $2,400 $1,200 Required: 1. Using the high-low method, estimate the fixed shipping expenses per month and the variable cost of shipping each unit. Fixed shipping expense Variable cost element per month per unit 2. Express the fixed and variable components of total monthly shipping expenses as a cost formula. |Y=