Question

What is a recursive rule for the sequence 9,14,24,44,84?

Answer 1

You're starting with 9. Double it to get 9*2 = 18. Then subtract 4 to get 18-4 = 14

Then take 14 and double it: 14*2 = 28, then subtract 4: 28 - 4 = 24

Then take 24 and double it: 24*2 = 48, then subtract 4: 48 - 4 = 44



So the next term is found by doubling the previous term and subtracting 4


So the recursive rule is

a[n] = 2*a[n-1] - 4

Answer 2

Thanks!! =)

Answer 3

sure thing :)