1. When the 171st positive even integer is subtracted from the 220th odd integer, the result is z. Determine the value of z.

2. Evaluate the square root of (5^5 + 5^5 +5^5 + 5^5 + 5^5).

4. Winnie and Harlan set up a lemonade stand at the RMS basketball games. Mac charged them $20 to set up the stand. Their other expenses were $4.00 for materials for a sign; $1.50 for each bag of 100 cups; $1.00 for each bag of ice: and $2.50 for each package of lemonade mix, each of which made 2 gallons of lemonade. If they bought 300 cups, 12 bags of ice, and 9 packages of lemonade mix, how many 8-ounce cups of lemonade could they have sold from the amount of mix they bought? How many cups of lemonade must they have sold at $0.50 per cup to break even? How much profit did they make if all the lemonade was sold?

3. If a swimming pool has a perimeter of 18 meters and covers an area of 18 square meters, what are its dimensions?

6. How many cards must I draw from a deck of 52 cards to be certain that I have at least 5 of the same color if the deck has 13 blue, 13 green, 13 red, and 13 white cards?

5. The average age of the 40 members of a computer science camp is 17 years. Of those attending, 20 are girls, 15 are boys, and 5 are adults. If the average age of the girls is 15 and the average age of the boys is 16, what is the average age of the adults?