Answer:
tn = a*2^(n - 1)
Step-by-step explanation:
a = 4
r = 2
tn= a*2^(n-1)
Try it
t3 = 4*2^(3 -1) Combine the power
t3 = 4 * 2^2 Find 2^2
t3 = 4 * 4 Multiply
t3 = 16 Answer for t3
Answer:
2^(n+1)
Step-by-step explanation:
You don't even need to use algebraic methods or the formula for this; it's just common sense. 4=2^2, 8=2^3, 16=2^4.
4 is the term 1
8 is term 2
2=term # (1) + 1 for 4
3 = term # (2) + 1 for 8
And so on
So it is 2 to the power of (term # + 1)
