Multiply the number of attempts with the probability,
160 x 0.8 = 128 attempts made.
Hope this helps.
Answer:
A. 3s
Step-by-step explanation:
The height of the object after t seconds is given by:

When will the object hit the ground?
It hits the ground after t seconds, and t is found when
. So







3 seconds, so the correct answer is given by option a.
Im pretty sure it would be doubling the length of each side