A candle burns at a constant rate of 2.5cm/h. The candle is 15cm tall when it is first lit. Let "t" represent the time is it burning in hours and let "h" represent the height of the candle in centimetres. a) Should the slope of this relationship be positive or negative? Explain your reasoning. b)What is the equation for this problem? c)What is the height of the candle after 3 hours? d)What is the t-intercept (when h=0)? Explain what this means in real-life. e)Explain why this graph has no meaning below the t-axis, nor behind the h-axis.