You are required to analyse two separate models for the depreciation on a particular asset with an initial value if 31 000. The asset depreciates by a quarter of its initial value over (N + 5) years, where N is the last digit of your ID number. Ne Model A: The value of the asset is modelled by the following cubic polynomial:- 4 VA = V0 - Bt3 Model B: The value of the asset is modelled by the following exponential function:- VB = VA where A and B are constants and t is the time in years. Part A Write down the value of V, and find the values of the constants A and B. Part B Plot the graph of VA/VB and discuss how both models can be compared using this graph. Using your graph, or otherwise, find the time and the value of the largest percentage difference between value of the asset under each model