The bullet's vertical velocity at time
is

where
is the acceleration due to gravity.
At its highest point, the bullet's vertical velocity is 0, which happens

(or about 140 s, if you're keeping track of significant figures) after being fired.
10 inches is the correct answer.
Answer:
4.3 L
Explanation:
Ideal gas law:
PV = nRT
Rearrange:
V / T = nR / P
Since n, R, and P are constant:
V₁ / T₁ = V₂ / T₂
Plug in values and solve:
(3.5 L) / (25 + 273.15 K) = V / (95 + 273.15 K)
V = 4.3 L
False. That description fits the wave's 'frequency'.
It has nothing to do with refraction.