How many years will the tree have 100 branches?

Question

He predicts that The relationship between N the number branches on the tree and t that elapsed time in years since the tree was planted can be a model by the following equation N = 5•10^0.3 T according to Takumi’s model in how many years will the tree have 100 branches given an exact answer expressed as a base -10 logarithm

Answer 1

100 = 5(10^0.3t)

20 = 10^0.3t

log 20 = 0.3t

1.3010 ≈ 0.3t

Can you solve for t and answer?