jack bought a tree to plant in his front yard. the tree grows at an approximate rate of 9 inches per year. after 4 years, the tree is 5 feet tall. write an equation in slope-intercept form to find the height (in feet) of the tree, y, after x years. then, find the number of years it will take the tree to reach 20 feet

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.