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 Nov22 comment How do I algebraically express that I'm using the integer part of a real number? Thanks, that's what I was looking for. Nov22 asked How do I algebraically express that I'm using the integer part of a real number? Nov22 accepted How can I evaluate this exponential equation with natural logarithm $6161.859 = 22000\cdot(1.025^n-1)$? Nov22 comment How can I evaluate this exponential equation with natural logarithm $6161.859 = 22000\cdot(1.025^n-1)$? Ohh, I got it, you applied the natural logarithm on both sides of the equations. Nov22 awarded Cleanup Nov22 comment How can I evaluate this exponential equation with natural logarithm $6161.859 = 22000\cdot(1.025^n-1)$? False, wolframalpha.com/input/?i=6161.859+%3D+22000+*+%28%281.025+%5E+51.840‌​78822%29+-+1%29 Nov22 comment How can I evaluate this exponential equation with natural logarithm $6161.859 = 22000\cdot(1.025^n-1)$? Ok, I've got to the point you got, even though I thing I did some algebra error, look: n = ((6161.859/22000)+1)/ln(1.025) => n = 51.84078822 Nov22 revised How can I evaluate this exponential equation with natural logarithm $6161.859 = 22000\cdot(1.025^n-1)$? rolled back to a previous revision Nov22 awarded Custodian Nov22 reviewed Approve How can I evaluate this exponential equation with natural logarithm $6161.859 = 22000\cdot(1.025^n-1)$? Nov22 asked How can I evaluate this exponential equation with natural logarithm $6161.859 = 22000\cdot(1.025^n-1)$? Apr4 awarded Commentator Sep28 accepted If U contains A and B, and X is 80% of A, how much % is X in U? Sep28 accepted If U contains A and B, and X is 80% of A, how much percents is X in U? Sep28 asked If U contains A and B, and X is 80% of A, how much percents is X in U? Sep28 comment If U contains A and B, and X is 80% of A, how much % is X in U? A is 60%, B is 40%, and they are disjoint sets. Sep28 comment If U contains A and B, and X is 80% of A, how much % is X in U? I edited the question adding the details I forgot about A and B. Sep28 revised If U contains A and B, and X is 80% of A, how much % is X in U? added 34 characters in body Sep28 asked If U contains A and B, and X is 80% of A, how much % is X in U? Jun23 comment How to evaluate a $A_{x\times y}B_{y\times z}$ where $A$ and $B$ are matrices, $x\neq z$ Thank you amWhy.