In 2016, almost ____ of Americans who access the Internet use a mobile device at least some of the time

When the variance of a probability distribution is $81,000 the risk equals:

A) $900 B) $6,561,000,000 C) $284.61 D) There is not enough information to calculate the risk.

Which of the following participants in the online card payment process is the financial institution that provides card services to banks?

A) issuing bank B) credit card association C) acquiring bank D) processor