Me answer this:
a fireman is halfway up a ladder. he goes down 4 steps to get the hose and then climbs 15 steps. when he stops climbing, there are 3 more steps before the last step of the ladder. how many steps does the ladder have?

Arestaurant offers a $12 dinner special that has 5 choices for an appetizer, 12 choices for an entrée, and 4 choices for a dessert. how many different meals are available when you select an appetizer, an entrée, and a dessert? a meal can be chosen in nothing ways. (type a whole number.)

Find the area of an equilateral triangle with a side of 6 inches

How do you write something in scientific notation?