Lydia sells intricately shaped holiday soaps for $9 each. after each holiday, she marks the related soap down to $6.75. what percent discount should she advertise on her social media site?

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?