For handwritten assignments, you need to show all work and all the steps wherever necessary. If you just write down the final answer without showing any work, you will get only partial credit. Exercise 1. Let f(x) = 2 cos(2x+7) - 1 (1) Find the domain and the range of f. (2) Sketch the graph of using the transformation rules in Section 1.3 and mark the x-intercepts and y-intercepts on the graph. (Recall that the x-intercepts of a graph are the x-coordinates of the points where the graph intersects the x-axis. They are found by setting y = 0 in the equation of the graph. Similarly, the y-intercepts of a graph are the y- coordinates of the points where the graph intersects the y-axis. They are found by setting x = 0 in the equation of the graph.)