can you check this? i'm confused on the second part?

Find the axis of then find the coordinates of the vertex. a: 2 6= 12 c- 98 869= 2x2+ 12X47 - b (12 f ( x ) = - 3 1 - 5) A rock is thrown directly upward with an initial velocity of 96 feet per second from a cliff 120 feet high. The height of the rock, b, in feet , after t seconds is given by the equation h(t) = - 16t + 96t + 120. 264 . Sketch the graph on the axes below. Be sure to label the axes in context. h15): - you + w 246 h ( 2 ) = - 16 / 2 ) + 96 ( 2 ) " ) 3 - ( ( 2 ) = - 48 + 192 + hagel of ruck 110 h 1 2) = 264 (13) = - 144 +288+12 0 12 theofs Scanels h(3) = 264 how = - 256 7384 b. To the nearest hundredth of a second, when will the rock be 258 feet high? Solution must be algebraic. hi4) = 248 - 16 - 16+2 +96 + + 120 = 258 - 120 - 120 1601- 16 6+9 60 = 138 P- 16 ( t 1 6 ) = 129 3 22 . 60