Submission ○ For each problem below, submit file(s) electronically to Blackboard according to description.

 Grading Guideline ● Your code should execute. For code with errors executing, points will be deducted. ● Keep code clean, unclean code will get points deducted. Unused lines of code or debugging prints should be removed before submitting. Repeated lines or functionalities should be avoided. You may lose points if code has repeating lines. (for example, you may calculated "prices" already, but later you calculated it again, is considered repeating code) ● Variable Naming: use variable names that make sense, avoid built-in and reserved keywords.