Answer:
the answer to your problem is B
Collect like terms:
4r^2 + (-2 + 6)
Simplify:
4r^2 + 4
DONE !!
Shown from studies, it would take around 1.11 seconds to fall from a 20 feet high drop.
(distribute)
(collect like-terms)
(we flipped the sign because we divided by a negative)