Question 1019767

I have a work problem: Laura lights a candle in her kitchen. The candle is burning at a rate of .5 inches per hour. After 5 minutes the candle is 3.5 inches tall. I need to know what equation I use to figure out the height of the candle. 
<pre>With H being height of the candle after t minutes, equation is: {{{highlight(highlight_green(highlight(H(t) = - (1/120)x + 3&13/24))))}}}