hi pls help!!

The following represents the graph of the function: f(x) = sin x + sin 3x 2 sin 2x Based on the graph of this function do the following: (10) 1. Use your understanding of how to identify the parameters of the sinusoidal function y = a sin(bx +0) + d or y = a cos(bx + c) to write the equation of a simpler function p(x) that describes the graph. Explain your choices. (10) 2. Check the answer you obtained in (a) by graphing the new function p(x). Obtain a printout of the graph. Explain how you used your graphing calculator to verify that your answer is correct. (30) 3. Verify algebraically that the two equations are equivalent