Determine the vertex of
f(x) = x^2 + 8x - 5

(-4,-21)

Step-by-step explanation:

Apply the formula for calculate the x-coordinate of the vertex of the parabola:

Where:

a=1 and b=8

Then, this is:

Now you must substitute x=-4 into the function to obtain the y-coordinate of the vertex.

Then, this is:

Therefore the vertex is:

(-4,-21)

the answer is: the length is 5/6 yards.

give me a or a 5 star rating if this is correct!

step-by-step explanation: