Function that describes a table

Question

Hi what function would describe the relationship of this table ?

0 - 0

1 - 5

2 - 20

3 - 25

Answer 1

An function with 4 parameters will fit this data!

For example a general cubic polynomial will do and you can determine the coefficients from the 4 co-ordinates given.

In order to get a specific answer you will need to establish some conditions on the function.