The max height will be reached after 3 seconds.
You have a typo in your equation. For this type of quadratic equation, it always starts out with a negative coefficient of the t squared term.
To find the x-coordinate of the vertex, we just need to use the expression: -b/2a.
Then, we have:
-24 / (2(-4))
-24 / -8
3
20/2-10/5. You divide 20 by 2 and subtract that from 10 divided by 5
H’(-7,4) I’:(-7,8) J’:(-3,10) K’:(-3,4)
