Question 1153208
Points (x,y) are (0,24000) and (1,20400).

{{{y=24000*b^x}}}


The one-year point
{{{20400=24000b^1}}}

{{{b=20400/24000}}}

{{{b=0.85}}}


MODEL:  {{{highlight(y=24000*(0.85)^x)}}}