with the exponet of 5 radical sign over 125/.55 show process using logarithms (sorry index of 5)= = Now use the principle that to rewrite the above: 10^ Now use the principle that to rewrite the exponent of 10: 10^ Now use the principle to rewrite the above as: 10^ Now use a calculator to get log(125) = 2.096910013 and log(.55) = -.2596373105 10^ or 10^ or 10^ or 10^ or 2.960121005 Edwin