Gloria the grasshopper is working on her hops. She is trying to jump as high and as far as she can. Her best jump so far was 89 cm long, and she reached a height of 44 cm. What is the a-value for the parabola that describes the path of her jump? Round your answer to the nearest hundredth. Note: if you round incorrectly, or type in the wrong answer, you will not earn credit for this problem, even if you showed your work correctly. Be very careful rounding and typing in your answer!