Question 1174349
---------------------------------------------------------------
..., think of a positive number, triple the number, square the result, and then 
add 7. If Lexi’s answer is 43, ...
------------------------------------------------------------------


{{{highlight((3p)^2+7)}}}


If result is y, then  {{{(3p)^2+7=y}}}
{{{(3p)^2=y-7}}}
{{{3p=sqrt(y-7)}}}
{{{p=(1/3)sqrt(y-7)}}}



If y=43, then {{{p=(1/3)sqrt(43-7)=(1/3)sqrt(36)=highlight(2)}}}.