Refer to the table above. If, at a price of $4 per loaf, the market supply of bread is 75 loaves, Seller 2's supply is:

If you were building a macroeconomic model that explores the effect of the aging population on the needed expenditure for Social Security and Medicare, the exogenous variable(s) would be the

A) aging population. B) needed expenditure on Social Security. C) needed expenditure on Medicare. D) needed expenditure on both Social Security and Medicare.

Which statement is true?

A. Blacks have a lower poverty rate than Hispanics. B. Blacks have a poverty rate of about three times that of whites. C. Members of white families headed by females have a higher poverty rate than all black families. D. None of these statements are true.