(x+2)^2+(y-3)^2=183 center and radius

What is the definition of exponential decay?

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.)

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?