The answer is 6.524. Hope this helps! :D
Answer:
umm here..i don't know if it's right but there....you can download mathpapa and goodluck
We are given the following quadratic equation

The vertex is the maximum/minimum point of the quadratic equation.
The x-coordinate of the vertex is given by

Comparing the given equation with the general form of the quadratic equation, the coefficients are
a = 2
b = 7
c = -10

The y-coordinate of the vertex is given by

This means that we have a minimum point.
Therefore, the minimum point of the given quadratic equation is
Answer: k= -1
Step-by-step explanation: cant to quadratic as it is not in standard form
Is there a letter d but if i had to choose i think the answer is C