I can do each of the things I asked above. So, let's change this into vertex form: [tex]h=-16t^2+36t+4[/tex] [tex]h=(-16t^2+36t)+4[/tex] [tex]h=-16(t^2-2.25t)+4[/tex] [tex]h=-16(t^2-2.25t+1.27-1.27)+4[/tex] [tex]h=-16(t^2-2.25t+1.27)+20.32+4[/tex] [tex]h=-16(t-1.125)^2+24.32[/tex] The vertex is at (1.125,24.32) Answers may vary due to rounding