1/ A rectangle has a perimeter of 62 cm. If the length and width are each increased by 2 cm, by how many square centimeters does the area increase?
2/ A pharmacist must mix 12 fl oz of cough syrup that contains 25% active ingredient with flavored syrup that contains no active ingredient. How many fluid ounces of flavored syrup must the pharmacist add to create a mixture containing 10% active ingredient?
3/ John is biking at a rate of 15 mi/h. There are 5280 ft in 1 mi. On average, how many feet does John travel in 1 minute?
4/ Malcolm gives a cashier two one-dollar bills to pay for a $1.64 purchase. What is the least number of coins that Malcolm could receive as correct change?
5/ According to a survey of Ms. Jones’ pre-algebra class, 11 students own a cat, 12 students own a dog, 6 students own both a cat and a dog and 3 students own neither. What is the number of students in Ms. Jones’ pre‑algebra class?