Answer:
a parabola opening downward (see below)
Step-by-step explanation:
The graph of any quadratic function is a parabola. This one has a negative leading coefficient, so it opens downward. There is no term containing t to the first power, so the function is an even function: its axis of symmetry is the y-axis. The vertex is (t, h) = (0, 150).
See the attachment for a graph.
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Additional comments
An appropriate domain for the function is t ≥ 0, which would make the graph half a parabola.
