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 $2,360 February 4 $3,260 March 5 $2,800 April 2 $1,314 May 3 $2,310 June July 6 $3,240 8 $4,704 11. By how much would the total contribution margin decrease in August if Phillips decides to offer its customers a 5% price discount on the seven units? Contribution margin decrease by