"Greg Guarino" wrote in message ...

On 4/15/2013 3:26 PM, Bill wrote:

Greg, We both drew the same picture. How much math background do you
have (if you don't mind me asking)?

Bill

Nothing too advanced. Algebra, geometry and trig in high school, a
little calculus in college. That would all have been in the '70s.

Here's where my kids would ask "1870s or 1970s?" ;~)

John
....of about the same vintage