What is the period of the trigonometric function f(x) = sin(5x) + cos(3x) in radians?
+
Question: Solve the inequality system by graphing: {x + y β₯ 4, 2x - 3y < 6}. Graph the region that satisfies both inequalities. What are the coordinates of the vertices?
+
What are the three rules for the congruence of triangles?