According to Table 12-4, which presents a queuing problem with a constant service rate, on average, how many minutes does a customer spend in the service facility?

David's liquidity ratio is 3.0. He has $1,000 in current liabilities. Therefore, he has ________ worth of liquid assets

A) $3,000 B) $333 C) $4,000 D) $700

Which of the following languages is the resource description framework written in?

A) HTML B) SGML C) VHML D) XML