Y=3/5x - 2/7 what’s they y intercept

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

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?

How do newtons third law of motion demonstrates on a rollar coster