equation H=16-0.5t describes the height in inches (H) of candle after has been burning for t hours Use the equation to determine how long the candle will burn

Question

I NEED HELP

Answer 1

if the candle burns out then its height will be 0 --> the whole thing melted

 

so lets solve for t (time) for h=0 

 

 

0 = 16 - .5t  <-- subtract 16

 

-16= -.5t     

 

 

 

then divide by -.5 on both sides

 

 

32 = t

 

so the candle will burn for 32 hours