! Required information [The following information applies to the questions displayed below.] Phillips Company manufactures air-conditioning units for commercial buildings and has noticed considerable variation in shipping expenses from month to month as per the data below: Units Total Shipping Month Shipped Expense January 4 $2,120 February 4 $3,020 March 5 $2,500 April 2 $1,278 May 3 $2,130 June 6 $2,880 July 8 $4,128 4. What is the cost formula for shipping expenses? Y = X ! Required information [The following information applies to the questions displayed below.] Phillips Company manufactures air-conditioning units for commercial buildings and has noticed considerable variation in shipping expenses from month to month as per the data below: Units Total Shipping Month Shipped Expense January 4 $2,120 February 4 $3,020 March 5 $2,500 April 2 $1,278 May 3 $2,130 June 6 $2,880 July 8 $4,128 5. If seven air conditioners are shipped in August, estimate the total shipping expenses. Total shipping expense