According to the quadratic equation, it is found that 12 hours have been worked when productivity is at 0.
It is given by:
P(x) = -2x² + 24x
It is of zero when:
P(x) = 0.
Hence:
-2x² + 24x = 0
2x(-x + 12) = 0
We want the non-zero result, hence:
-x + 12 = 0 -> x = 12
12 hours have been worked when productivity is at 0.
More can be learned about quadratic equations at https://brainly.com/question/24737967
