Answer:
the answer is a I just took the test and its right
Step-by-step explanation:
70.24, That should be right
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Answer: 
Step-by-step explanation:
From the figure, it is downward parabola of the form 
The parabola has its vertex at 
Distance between parabola vertex and its directrix is 1 unit.
So, the value of a is 1
Hence, the equation of parabola is 