Lily just lit a new candle and then let it burn all the way down to nothing. The initial length of the candle was 10 inches and after burning for 10 hours, the candle's height was down to 5 inches. Write an equation for L
,
L, in terms of
t
,
t, representing the length of the candle remaining unburned, in inches,
t
t hours after the candle was lit.