Show transcribed image text 14. 0/1 points| Previous Answers LarColAlg9 1.8.063. My Notes Ask Your Teache Find the domain of the expression. Use a graphing utility to verify your result. (Enter your answer using interval notation.) x2- 6x +8 Need Help? Read It Talk to a Tutor Your work in quesson (s) 8 will also be submitted or saved. Submit Assignment Save Assignment Progress Practice Another Version 15. + 1 points LarColAIg9 1.8.074. My Notes Ask Your Teache Use the position equation s=-16t2 + vot + so where s represents the height of an object (in feet), Vo represents the initial velocity of the object (in feet per second), So represents the initial height of the object (in feet) and t represents the time (in seconds) A projectile is fired straight upward from ground level (so) with an initial velocity of i92 feet per second. (a) At what instant will it be back at ground level? sec b) When ill the height be less than 192 feet? (Only consider the time from launch to landing. Enter your answer using interval notation.)