Question 960081
What is the base?

{{{log(b,(2x+7))=1/4}}}


If you want b=10, then  {{{10^(0.25)=2x+7}}}
{{{1.7783=2x+7}}}
{{{2x=1.7783-7}}}
{{{2x=-5.77172}}}
{{{x=-2.61086}}}