Please help Me I will mark branilest

What is the answer to this problem 7 * 5/6

Why do interests rates on loans to be lower in a weak economy than in a strong one

Me its important ! marge runs an ice cream parlor. her speciality is triple chocolate sundaes.she can prepare 1 sundae every 2 minutes, and she earns $1.20 for each sundae she makes . if she just makes sundaes for a single shift of at most 4 hours and at least 2 hours , which function relates her earnings to the number of minutes she works?