Emili pays $24 to rent a boat at the lake for up to six hours she constructs the inequality and number line below to represent the number of hours x she can use the boat

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?