What's the vertex and axis of symmetry of y= -2x^2 + 8x-20

Vertex

V  = (2, -12)

Axis of symmetry

x = 2

Step-by-step explanation:

To answer this question suppose the general equation of a parabola of the form:

Where a, b and c are constants that belong to real numbers.

So it is known that the vertex of this parable is:

So, we use this same formula to find the vertex of the parabola

Where:

The vertex of the parabola is at the point

V = (2, -12)

Finally, the axis of symmetry of a parabola always passes through its vertex. Then the axis of symmetry is the straight line

x = 2

For the first florist you would do $12.50 divided by 4 as there are 2 flower bouquets and 2 vases = $3.125, which represents both b and v 

As for the second florist you would do $29.00 divided by 10 as there are 8 flower bouquets and 2 vases. This results to $2.6, this represents the cost of one b and one v.