Answer:

Step-by-step explanation:
The general vertex form of parabola is,

where,
(h, k) is the vertex of the parabola.
The given function is,








This is vertex form the given function.
The descent after 16 seconds would be 672 feet, with the function -42•X and X=16 so -42•16=-672
Please help solve 12-14
( will give brianlst :))