Answer:
c. Substitute
Step-by-step explanation:
A graph of the function on the left shows the parabola touches the x-axis at x = -8/3. That is, the vertex is on the x-axis. It crosses the y-axis at y = 64.
<h3>Show a value is a root</h3>
A given solution to an equation can be verified by substituting that value into the equation an showing the result is a <em>true statement</em>. Here, the value x=-8/3 is a root of the given equation because that value makes the equation true.

He could give each grandchild 3 cookies each. He would then have 12 cookies remaining.
You would divide 60 by 16 which would be 3 with a remainder of 12. The remainder is the number of cookies left after giving each grandchild the same amount of cookies each.
I hope this helps!
7 - 2 5/7
= 7 - 19/7
= 49/7 - 19/7
= 30 / 7
= 4 2/7