From what i see i think the answer is seven
Answer:

Step-by-step explanation:
The formula for the nth term of a geometric sequence is

a₀ = 1, r = 3, and n = h
So,



Yes. If you're given a lower triangle matrix A, then A = LU if L = A and U = I (the identity matrix). If your matrix is upper triangular, then A = LU with L = I and U = A.