Answer:
The vertex (h,k) is (-4,-7).
Step-by-step explanation:
I assume you are looking for the vertex 
.
The vertex form of a quadratic is 
where the vertex is (h,k) and a tells us if the parabola is open down (if a<0) or up (if a>0). a also tells us if it is stretched or compressed.
Anyways if you compare to , you should see that 
.
So the vertex (h,k) is (-4,-7).
Answer:
B:825
Step-by-step explanation:
Hopes this helps:)
An=Asub1+d(n-1)
Asub5= -5+½(4)
=-5+7
=2
Answer:
8g
Step-by-step explanation:
In 8g, g has the coefficient 8: we multiply g by 8.
Answer:
angle 5 = angle 1
angle 6=angle 3
angle 2+angle 1+angle 3=180 degrees
angle 2+5+6=180 degrees
