The awnser i’m really have trouble finding a awnser

What is the difference between the predicted value and the actual value

Cody ran nine miles on his first day of training. the next day he ran 1/8 that distance. how far did he run the second day?

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?