Answer
The first five terms are:
$a_1= 5$
$a_2 = 10$
$a_3 = 20$
$a_4 = 40$
$a_5= 80$
Work Step by Step
Use the given recursive formula to find the next four terms:
$a_1= 5$
$a_2 = 2a_1 = 2(5)=10$
$a_3 = 2a_2 = 2(10) = 20$
$a_4 = 2a_3 = 2(20)= 40$
$a_5= 2a_4 = 2(40)=80$
