Lines m and n are perpendicular. Rotating a point D 180 degrees using center A has the same effect as reflecting over line m. What are two possible locations of point D? Do all points in the plane have this property?

Ablock of wood is a cube whose side is x in. long. you cut off a 1-inch thick piece from the entire right side. then you cut off a 3-inch thick piece from the entire top of the remaining shape. the volume of the remaining block is 2,002 in3. what are the dimensions of the original block of wood?

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You want to volunteer for at most 20 hours each month. so far, you have volunteered for 7 hours this month. which inequality represents the number of hours h you can volunteer for the rest of this month? h? 13