Princess Lynn's wedding veil was originally 65 ft long. She asked her seamstress to cut the veil, and now it is 3ft long. What is the percent of change of the length of the veil?

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?