Answer :
You can almost always write a cubic equation to match 4 arbitrary points. Here, that would be
.. y = -0.00971251x^3 +0.301088x^2 +9.08625x +58.7413
This function agrees with the table when rounded to 3 decimal places.
.. y = -0.00971251x^3 +0.301088x^2 +9.08625x +58.7413
This function agrees with the table when rounded to 3 decimal places.

