Consider, please, this option.
Note, 1. check was not performed, 2. make design according the local requirements.
Answer:
6x
Step-by-step explanation:
Given that a function f(x) is given as

A) 
Now divide by delta x

B) When delta x tends to 0, this becomes

(NOte: This is the derivative of f(x))
Answer: C or 2 seconds.
Step-by-step explanation:
To find the vertex in a standard form equation: (-b/2a,f(-b/2a))
plug it in: -64/2*-32 = 2
101 feet. also -1 isnt an elevation. If you were to draw a line youd put all the negative numbers on the bottom, and positive on the top.