Please solve the following integer linear models by excel solver:

Ex. 9.1-3.-Chosing a Telephore Compony There are 3 telephone componies offering long-distonce seruce. The customer mokes on ave. of 200 minutes colls a mointh. Assume that the customer does not pay the fixed-cost unless helshe mokes calls \& con opportion the calls onong all three componies. How should helshe we the thiee componies to minmize the ronthly telephone bill