Hello, Greg!
k 2k+6
16 = 2
my classmate tells me the answer is k =3, is this right ?
I have no idea . . .
What is the question?
This is the way I thought of this problem too. Would have been nice if Greg used parentheses. Any way, your answer is off by a factor of 1/2. You went wrong during your substitution; answer should be: ln(3)/(2*ln(2)) or .7925. Obviously this is irrelevant since it's not even the question he's asking.