Jon walked 8 miles in 3 hours. jim walked 14 miles in 5 hours. are these rates in proportion? if no, who walked faster?

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.