9. A person can burn about 6 calories per minute bicycling. Let x represent the
number of minutes bicycled, and let y represent the number of calories burned.
Create a mapping diagram to show the number of calories burned by bicycling
for 60, 120, 180, or 240 minutes.

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?