3. A branch breaks off the top of a giant sequoia tree and falls straight to the ground. The branch's height in meters is approximately h(t) = -1672 +300 where t is the time in seconds. About how long is the branch in
the air?
8.6 s
4.3 s
с 2.2 s
D 1.1 s
A

Its 4.3

Step-by-step explanation:

If you graph it, y is the height an t is the time. At a height of 0 it had been in the air for 4.3 seconds

b. would be the answer : )

step-by-step explanation:

step 1: add -16x to both sides.

16x−4y+−16x=64+−16x  

−4y=−16x+64

step 2: divide both sides by -4.

−4y /-4 = -16x + 64/-4

answer:   y=4x−16

hope i'm right