Question 824782
{{{ y= 2(3)^(-x+2) - 18=0}}}
{{{ y= 2((3)^(-x+2) - 9)=0}}}
{{{(3)^(-x+2) - 9=0}}}
{{{(3)^(-x+2) = 9}}}
{{{(3)^(-x+2) = 3^2}}}
{{{-x+2 = 2}}}
{{{-x = 2-2}}}
{{{-x = 0}}}
{{{highlight(x=0)}}}
 
{{{graph(300,300,-10,10,-50,50,2(3)^(-x+2) - 18)}}}