Question

Find the fourth term of the sequence given by the rule tn=4(2)^n-1

A) 32

B) 34

C) 64

D) 16

Answer 1

Answer: Choice A) 32

-----------------------------------------------
-----------------------------------------------

Plug n = 4 into the formula

tn = 4(2)^(n-1)
t4 = 4(2)^(4-1) ... every n is replaced with 4
t4 = 4(2)^3
t4 = 4(8)
t4 = 32