What is the amplitude of the equivalent uniform series to the following series. At t = 0 amplitude 300, from t = 1 to 30 amplitude starts at 100 and increases every time step by 50. At t = 30 there is a single event of amplitude = 250 over and above the contribution of the constantly increasing term. i = 6%. O 642.04 O 856.77 O 961.36 O 316.44 O 1106,92