What is the vertex of the graph of this equation y = -3x^2 - 12x - 9 a. (-2,3) b. (2,3) c. (2,-3) d. (-2,-3)

Option A

Step-by-step explanation:

The graph of a quadratic function is a parabola.

Find the x-coordinate of the vertex of the parabola with:

In this case:

Substitute them into the formula. Then:

Now, substitute the into the quadratic function to find the y-coordinate of the vertex of the parabola.

Finally:

The vertex is: (-2,3)

step-by-step explanation:

well if you round, things become much more simple. round 5.95 to 6, 4.25 to 4, and 1.05 to 1. now, add 6+4+1 and that would equal 11. so the items together would equal to about $11.