I believe the answer is A because its the only one that makes the most sense.
4)
the arrow touches the ground when the heigth is 0
so we need to replace h=0 and solve for t

<em>the arrow tuches the ground at 3.4 seconds</em>
5)

replacing

<em>solve for m</em>

<em>the mass is 13.50Kg</em>
<em />
The volume is V=399.48 m to the power of three
Answer:
1332 i think
Step-by-step explanation:
287+379=666
666*2=1332