There are no limitations on the number of constraints or variables that can be graphed to solve an LP problem

The difference between gross profit and operating expenses.

What will be an ideal response?

Which of the following is true about direct marketing?

A) It is difficult to evaluate the effectiveness of direct marketing. B) Direct marketing is not the best way of communication when targeting a specific audience. C) Direct marketing anticipates a long-term response. D) Many customers are put off by direct marketing efforts.