Find the range of ƒ(x) = –2x – 5 for the domain {–2, –1, 1, 2}. {1, 3, 5, 7} {–1, –3, 3, 5} {–1, –3, 7, 9} {–1, –3, –7, –9}

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?