Answer:
8.55 inches
Explanation:
We can use the slope intercept form to write this equation
y = mx+b where m is the lope and b is the y intercept
The y intercept, b, is how tall the candle is when we start, 12 inches
The slope is the rate at which it is burning or -.75 (the negative is because it is burning or getting smaller)
y = -.75x+12
or rewriting
t = 12-.75h where h is the hours and t is how tall
We are burning for 4.6 hours
t = 12-.75(4.6)
t = 12 -3.45
t= 8.55