How much money must you pay into an account at the beginning of each of 30 years in order to have $10,000 at the end of the 30th year? Assume that the account pays 11% per annum, and round to the nearest $1

In a marketing experiment, a marketing variable which is of central interest is called a(n) ________ because different levels or values of the variable are controlled by the researcher

A) manipulation B) external factor C) internal variable D) control factor

Which of the following does NOT represent a social media network that has stood the test of time?

A) Facebook B) LinkedIn C) MySpace D) YouTube