17. The function \( h ( t ) = - 16 t ( t - \frac { 1 } { 2 } ) + 27 \)
models the height \( h \) , in feet, of a rock \( t \) seconds after it is tossed from a balcony. Part A Find the rock's initial velocity and initial height. Explain. Part B Find the rock's maximum height. Show your work.