Nora and Vera do their math homework together. When they find 10(3), they get different answers. Nora claims the difference is 7. Vera claims the difference is 13. Who is correct? What error likely led to the incorrect difference?

Which statement is true about the extreme value of the given quadratic equation? a. the equation has a maximum value with a y-coordinate of -21. b. the equation has a maximum value with a y-coordinate of -27. c. the equation has a minimum value with a y-coordinate of -21. d. the equation has a minimum value with a y-coordinate of -27.