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Marcus needs to rewrite f(x) = x2 + 6x + 4 in vertex form.

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.

Somone me i want to know what 18 hours out of 24 hours in a fraction