What is the volume of the solid figure?

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The volume of a solid is the measure of how much space an object takes up. It is measured by the number of unit cubes it takes to fill up the solid. Counting the unit cubes in the solid, we have 30 unit cubes, so the volume is: 2 units⋅3 units⋅5 units = 30 cubic units.

The answer is c, because you subtract 18, and then divide by -3 and flip the sign.

Ok so the answer for this question is b im 100 percent sure.