Final answer:
The subject of this question is Mathematics. It involves analyzing efficiency and accuracy of deliveries using provided data on orders, units, lines, and deliveries.
Step-by-step explanation:
The subject of this question is Mathematics. The question provides data related to orders, units, lines, and deliveries.
It seems like a business or logistics problem where the quantity of orders, units, and lines is given, along with the actual delivered quantities.
information provided can be used to analyze the efficiency and accuracy of deliveries.