Cool-down Here are two definitions of the same sequence: Definition One: f(1) = 64 and f(n) = 12. f(n-1) for n 2. Definition Two: f(n) = 64 • (12)n-1 for n 2 1. 1. List the first 4 terms of this sequence. 2. Write an expression to represent f(20) 3. A person is trying to quit chewing gum. They decide they will have 64 pieces in week 1, but each week have half as many as the week before. The function represents the number of pieces of gum they will have in week. What is a reasonable domain for this function? Explain your reasoning.