I followed a comment’s answer and it said 945. Okay, I calculate it and I need like 3,000 but I need help to show my work!

Which is the completely factored from of xy^3-x^3y

Which of the following is the result of expanding the series

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?