A contest is being held.  The three prizes are a $2000 vacation, 1 paid week off work and a $500 camera pack.

In order to enter 1 ticket in the draw you have to contribute $1 per paycheque for the year.  So since there's 26 pay periods in a year each ticket will cost you $26. You can contribute as much as you want.

Let's say there's about 1600 employees in the company. 

How many tickets should you buy to maximize your chances?

If I change a sample calendar the base calendar is also changed. 

with(Finance):

c:=Calendar(Toronto):

IsHoliday("November 11, 2013",c)
                                                   true

I thought I would generate a fun problem for Maple, and see what coding we could come up with.

You happen to be at work one day and overhear the managers talking about taking sick days away from the employees because everyone is taking their sick time around weekends.  The managers have decided to take one more years worth of data before making their decision. 

So you've decided to build a program in Maple for all the employees to use so that...

I don't think the geom3d package can be used symbolically it needs specific values.  Maybe I'm wrong, am I?

How would one plot the intersection of the surface z=3.5 and the surface described by a matrixplot

Here is an arbitrary matrixplot surface for an example.

matrixplot([[3, 4, 5, 1, 1, 1, 2, 3, 2, 1, 7, 8], [2, 3, 4, 1, 2, 1, 2, 1, 2, 1, 2, 5], [7, 8, 7, 6, 7, 8, 4, 5, 3, 2, 1, 2], [2, 1, 2, 4, 5, 6, 5, 6, 7, 6, 5, 6], [2, 3, 2, 4, 5, 4, 5, 6, 7, 6, 5, 4], [9, 8, 7, 8, 9, 8, 9, 8, 7, 8, 9, 8], [9, 8, 7, 8, 8, 8, 7, 8, 6, 8, 7, 6]]);