Question 843389
"The intensity, I, of light received fro a source varies inversely as the square of the distance, d, from the source.",  {{{I=k(1/d^2)}}} or {{{I=k/d^2}}}.


light intensity is 6 foot-candles at 16 feet, {{{k=Id^2}}}
{{{k=6*16^2=1536}}}.


The main equation is {{{highlight(I =(1536)(1/d^2))}}}.
The question is for d=17, so evaluate {{{I=(1536/17^2)}}}.