1. Kendra is playing a video game. She starts with 100 life points. First she takes a hit and loses 40% of her life then she wins back all her life points for disarming a bad guy. What percent gain does Kendra need to receive to recover her loss from the hit?

2. The rental rate for a car at CarRus is either plan A: $70 a day with unlimited miles or plan B: $40 per day and $0.50 per mile. If you want to rent a car for 3 days and drive 100 miles how much would you save by choosing plan B?

3. The area of a square piece of board is 25 square inches. What would be the perimeter of that piece of board?

4. A rectangle has a length that is three times the width. If the area of the rectangle is 108 square inches, what would be the perimeter of that piece of board in inches?