engineering firm is doing design work $99 An 5-89 s roject. It has $40,000 in expenses at the s project. I beginning of each month starting in February 2018 through December 2018. The client has agreed to payment schedule, if the firm meets milestone delivery dates. Use the XNPV function to find the present worth as of December 11, 2017. The interest rate is 12%. Income 1/1/2018 $150,000 5/14/2018 150,000 8/6/2018 150,000 10/22/2018 150,000 1/1/2019 200,000 Date