1. Which is the greater amount: twice as much as 2/3 of 3/4 or three times as much as 2/3 of 1/2?

2. List all of the numbers between 100 and 400 that have exactly 3 factors each.

3. Satwal bought a CD, a game, and a backpack. The CD cost $8 more than a game. The backpack cost 3 times as much as the cost of the CD and game combined. All together, the three (without tax) cost $84. How much did the CD cost?

4. If your electricity bill for May is $99.64, which is a 17.5% increase over the April bill, what was April's electricity bill?