A graph shows the average SAT scores for males and females in 2012. The kind of graph used to show these data would be a

Refer to Figure 3-6. The figure above represents the market for canvas tote bags. Assume that the price of tote bags is $15. At this price

A) there is a shortage equal to 55 tote bags; the price of tote bags will rise until demand is equal to supply. B) the demand exceeds the supply of tote bags by 55. Some consumers will have an incentive to offer to buy tote bags at a higher price. C) the quantity demanded exceeds the quantity supplied by 75. The price will eventually rise to $25 where quantity demanded will equal quantity supplied. D) there is a shortage, equal to 55 tote bags, that will be eliminated when the price rises to $25.

The marginal tax rate is the

A. total amount of taxes paid as a percentage of total income. B. increase in taxes as a percentage of an increase in income. C. sum of all individual tax rates. D. tax rate paid by those with the lowest family incomes.