How much time visitors spend and how many pages they view on a website is a characteristic of ________

In which of the following circumstances could a contractor file a mechanic's lien on a property where work was performed?

A. The contractor's truck was stolen at the job site. B. The contractor's tools were damaged on the job. C. Kitchen cabinets were installed by the contractor and payment was never received. D. If materials provided were used to improve another property.

Which of the following is not a typical characteristic of a linear programming problem?

A) Restrictions exist. B) A choice among alternatives is required. C) The problem can be solved graphically. D) The problem has an objective.