Find the Constant of Proportionality in the word problem. Rauf walked a total of 12.5 km by making 5 trips to

school. Later on walked 15km during 6 trips. How many

kilometers does Rauf walk per trip?

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?