Answer:
--- Vertex
--- Axis of symmetry
Step-by-step explanation:
Given

Solving (a): The vertex
For an equation written in

The vertex is:

By comparison:
and 

So, the vertex is:

Solving (b): The axis of symmetry
For an equation written in

The axis of symmetry is:
x = h
In (a):

So:

Y=1x-7 is the equation and -7 is the value of B
Answer:
Step-by-step explanation:
Answer:
4,000,000
Or you can also say 4 million
Step-by-step explanation:
The first one is 400, the second on is 40, and the last one is 4 *I hope this help u