How does a business achieve economies of scale?

Compare the sources of consumer credit(there's not just one answer)1. consumers use a prearranged loan using special checks2. consumers use cards with no interest and non -revolving balances3. consumers pay off debt and credit is automatically renewed4. consumers take out a loan with a repayment date and have a specific purposea. travel and entertainment creditb. revolving check creditc. closed-end creditd. revolving credit

Rats that received electric shocks were unlikely to develop ulcers if the

What could explain why a decrease in taxes could lead to a less-than-proportionate increase in output? a. as a result of diminishing returns to current consumption, consumers may choose to spread the extra spending over the long term rather than consuming the proceeds of a tax cut all at once. b. consumers may choose to save much of the tax cut in anticipation of having to pay higher taxes in the future. c. a decrease in taxes will necessitate lower government outlays, thus largely offsetting the higher consumption expenditures of households. d. all of the above. e. a and b only.