Question

a 1 =500,a n =5a n-1 is the recursiverule for the sequence 500,100,20,4, 4 5 , is the statement true or false?

Answer 1

False

a 1 = 500
a n = 5a n-1

so

a 2 = 5 a 2-1
a 2 = 5 (500)
a 2 = 2500

and

a 3 = 5a 3-1
a 3 = 5 (2500)
a 3 = 12500

500, 2500, 12500