Question 684385
{{{ P(t)=400*log(2t+6). }}}
{{{ 750 = 400*log( 2t + 6 ) }}}
{{{ 1.875 = log( 2t + 6 ) }}}
{{{ 10^1.875 = 2t + 6 }}}
Find the left side on your calculator
and solve for {{{ t }}}