The slope is -2. In context to this problem, the candle will burn away 2cm of its length every hour.
Third choice because 1,5 years at 7 percent would of been kore
Inside a triangle, all inside angles add up to 180°
So, add the two angles:
26.4°+33.7°=60.1°
180°-60.1°=119.9°
b=119.9°