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Welcome Lynx, I can see you will be a challenging addition to the forum.
"When I saw a problem on the site, it had 2.6 rating."

It should have had 6.28 rating. :wink:
Your other problems will require more thought.

Wouldn't the lily pad be the same size? Unless I'm mistaken, a lily pad isn't mold.

You're adding 1 meter to the radius, so the circumference increases by 2*pi meters.

(2.6N+5)/(n+1)=2.75 Solving for N yields 15 previous voters.
(16*2.75+2*5)/18=M Solving for M yields a new score of 3.

Since there are three tires in use at all times, the total distance traveled by the tires is 3000 miles. Shared evenly among five tires, each tire is used for 600 miles.

Working backwards, day 60=1, day 59=1/2, day 58=1/4, day 57=1/8. On day 56 the lily pad (mold) is 1/16 the size of the pond.

The first equation, the lower case 'n' should have been an upper case 'N'.:

(2.6N+5)/(N+1)=2.75

youguysaregood
Markr, you are amazing! It took me so long to figure those out!

"Last edited by lynx07 on Thu Aug 19, 2004 2:34 pm; edited 1 time in total"

That is a pity, as it reduces the value of the answer.

"…"

... One circle and only one circle can be drawn through any 3 dots.

Or;
Microsoft Word … = command.