Part 1 Cashier (50pts)
========================
Basic rubric:

 - correct calculation of taxes (5pts)
 - correct allocation of change (20pts)
 - correct formatting of currency and tax rate (15pts)
 - answer to discussion question 1 (10pts)


Possible deductions:
 
 - unit price, quantity, and/or sales tax not incorporated as input parameters (-5pts)
 - output format of tax and currency not according to specs (-5pts)
 - unsensible output in cases where paid < owed and if paid == owed (-5 pts each)


Part 2 Monte Carlo Pi (50 pts)
========================================

Basic rubric:

- correct getN input method (10 pts)
- formula to compute pi (10 pts)
- correct number and frequency of outputs (20 pts)
- excel spreadsheet for the chart (10 pts)

Possible deductions:

- related to "correct number and frequency of outputs (12 pts)"
  - didn't use random number (-2 pts)
  - incorrect frequency or incorrect format of outputs (-1pt for each; 
    maximum deduction is -5 pts)

- related to "excel spreadsheet for the chart (6 pts)"
  - mistakes while drawing the chart  (-1 pt for each; maximum deduction is -3 pts)
    (e.g. incorrect name for x-axis or y-axis  / quite nonsensical result)



Considerations for both parts
=============================

- fail to include header(s) (-5pts)

- use incorrect filename(s) (-5pts)

- fail to compile (-5 pts minimum; we strongly encourage that you
recompile and test before submission).

- inconsistent style. (-5 pts; please read the elements of style. 
we will give comments on poor style and may take off a reasonable 
number of points for poor style).