What is the difference between a function and a relation

Adozen bananas weigh 3 pounds how many ounces does 1 banana weigh

At a kentucky friend chicken, a survey showed 2/3 of all people preferred skinless chicken over the regular chicken. if 2,400 people responded to the survey, how many people preferred regular chicken?

What is 100,000 times 1/100,000, using the standard method of multiplication? write the answer as 10 to a power.