Question 842120
<pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
over thinking it...re reply:
<u>k(x)</u> = {{{highlight((-1/5)x + 3)}}}, <u>k(x)</u> = {{{highlight(1)}}}
{{{highlight((-1/5)x + 3)}}}=  {{{highlight(1)}}}
 {{{x = 20}}}

{{{highlight_green(k(x))}}} = -1/5x + 3, {{{highlight_green(k(x))}}} = -1 &#8658;

 -1/5x + 3 = -1
   -1/5x = -4
       x = 20
Wish You the Best in your Studies.