Business Calculus
ln(87)\(\ln\]\left\)(\(\frac\)87\(\right\))
ln(78)\(\ln\]\left\)(\(\frac\)78\(\right\))
ln(178)\(\ln\[\left\)(\(\frac{17}{8}\]\right\))
ln(817)\(\ln\[\left\)(\(\frac{8}{17}\]\right\))