Determine the vertex of the function f(x)= -4(x-3)^2+6

The vertex is the point (3, 6)

Step-by-step explanation:

For a quadratic function its vertex form is:

Where

a is the main coefficient

h is the x coordinate of the vertex

k is the cordage y vertice

Therefore, for a function in this way the vertex will always be the point (h, k)

Notice that for the function

Then the vertex is the point (3, 6)

2 1/4 yards of fabric at $5 a yard would be $11.25.
2 spools thread at 35cents a spool would be 70 cents.
3 buttons at 25 cents each would be 75cents.
Zipper 60 cents would be 60 cents. (Idk about that one)
Total before sales tax would be $13.40.
Sales tax at 8% would be $1.06.
Total would be 14.36