Part 1: Here is the graph of 3 cos 3x + the interval [ -, ] . , A C over 4 B -T Give the coordinates of point A, the y-intercept: 3 (0, 2), (0, 32) "pi" or select T in the math editor.) (To enter , typ Give the coordinates of point B, the first x- intercept along the positive x-axis: 12 Give the coordinates of point C, the first peak of the graph with positive x value: 7