If you are planning to place an ad in a local newspaper with a size of 5 inches long by 4 columns wide and the newspaper's rate per column inch is $18, the ad will cost $360.
Solution: <span>5 inches x 4 columns = 20
20 column inch x $18 = $360</span>
Answer: network
Explanation:
Network externality simply states that demand for a good or service has to do with how other people demand for that particular good or service. It means consumer's buying patterns are influenced by the purchase of others buying the product.
Therefore, a network externality exists when the number of customers who purchase a good or use it influences the quantity demanded.
Answer:
b. $20.82
Explanation:
The APR is the annual percent rate on a credit card. That is, Barbara's credit card has a 19.99% annual interest rate. In order to find the amount charged in interest for this month, we must find her monthly interest rate (m):

Since her balance is 1250, her monthly interest is:

The answer is b. $20.82