Answer:
A. 
Step-by-step explanation:

I am joyous to assist you anytime.
The answers are:
x
X^2 -5x +6
Ok, so we see in
y=a(x-h)^2+k
vertex is (h,k)
vertex is highest or lowest point
on one side, it goes up and other side it goes down
if a is positive, then it goes down then up
if a is negative, it goes up then down
we see
f(x)=2(x+3)^2+2
2 is positive
goes down then up
vertex is (-3,2)
so decreases from -infinity to -3 or ininterval
(-infinity,-3)
answer is first option
Wouldnt it be 9.81? you already found x just calculate it
30 with the remainder of 714