Find the volume of the pyramid and round to the nearest tenth

Liam's parents are driving three times as fast as liam is biking, but they left later than he did. if his parents caught up with him two hours after he left, how much later than liam did they leave?

Abank gives 6.5% interest per year. what is the growth factor b in this situation?

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.