Amanufacturer has daily costs given by the function c = 20,000 – 220x + 0.045x^2 where c is the cost and x is the number of units produced. how many units should be produced each day to yield the minimum cost for production?

B) A quadrilateral with one pair of parallel sides

Step-by-step explanation:

Specifically, this is a 4 sided figure with exactly one pair of opposite sides that are parallel. The other two sides are not parallel. A trapezoid can be formed if you draw a parallel segment to one side of a triangle. If you had two pairs of parallel sides, then it would be a parallelogram instead of a trapezoid.