Lin spent 80 minutes doing homework on Monday. Each day from Tuesday through Friday, Lin spent half as much time doing homework as the day before. How much total time did Lin spend doing homework, from Monday through Friday? Explain how you know.

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.