30
6 times 5 is 30 and since its 6 per hour you just do it to five :)
Answer:
The diver will hit the water at 1.5 seconds
Step-by-step explanation:
Given

Required (Missing from the question)
When will the diver hit the water?
To do this, we simply solve for t
When the diver hits the water, the height is 0 (at that point)
So, substitute 0 for h in 

Divide both sides by -16




Split
or 
Solve for t
or 
But time (t) can not be negative.
So:

Hence, the diver will hit the water at 1.5 seconds
Answer:
there's no picture
Step-by-step explanation:
4. 20 minutes
Explanation- It's the only answer with "minutes" as an answer.