Chapter 2 - Reasoning and Proof - 2-1 Patterns and Inductive Reasoning - Practice and Problem-Solving Exercises - Page 85: 6

80, 160

$\underset{x2}{\underset\Rightarrow{5}}, \underset{x2}{\underset\Rightarrow{10}},\underset{x2}{\underset\Rightarrow{20}}, \underset{x2}{\underset\Rightarrow{40}},\underset{x2}{\underset\Rightarrow{80}}, 160$, . . . We multiply by 2 to get the next number in the sequence.