Question 588675
What it is saying is that she starts with {{{ P }}}
and ends up with {{{ 2P }}} in her account, so
I can say
{{{ 2P = P*e^(.056t) }}}
Divide both sides by {{{ P }}}
{{{ e^(.056t) = 2 }}}
{{{ .056t = ln( 2 ) }}}
{{{ t = ln(2) / .056 }}}
You'll have to calculate this.
All I have is a staples calculator