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The graph shows the distance y, in inches, a pendulum moves to the right (positive displacement) and to the left (negative displacement), for a given number of seconds x. how many seconds are required for the pendulum to move from its resting position and return? enter your answer in the box.

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

What are the solutions of the equation x4 + 6x2 + 5 = 0? use u substitution to solve.