Complete the square to rewrite y = x2 + 4x - 1 in graphing form (y = (x-h)2 + k). Then, find the vertex of the parabola.

Step-by-step explanation:

y = x² + 4x - 1

  = (x + 2)² - 4 - 1

  = (x + 2)² - 5

This is now written in vertex form, so the vertex is (-2, -5). Hope this helps!

-13

step-by-step explanation:

f(x)=2x-5 for f(-4)

f(-4)   means let x=-4

f(-4) = 2(-4) -5

f(-4) =-8-5

      = -13

i am thinking c. sorry if im wrong .

step-by-step explanation: