I am stuck on this exercise, please show your steps and highlight answers.

Two traveling sinusoidal waves are described by the wave functions y, = 4.80 sin [x(4.25x - 11350)] yo = 4.80 sin [x(4.25x - 1135t - 0.250)] where x, y,, and y, are in meters and t is in seconds. (a) What is the amplitude of the resultant wave function y , + 2? m (b) What is the frequency of the resultant wave function? Hz