This year samantha gave each of her three nephews birthday gifts of $10,000 in cash. at christmas, samantha gave each of her three nephews christmas gifts of an additional $6,000 in cash. what is the amount of the taxable gifts, if any, made by samantha this year?

Environmentalists are concerned about emissions of sulfur dioxide into the air. the average number of days per year in which sulfur dioxide levels exceed 150 milligrams per cubic meter in milan, italy, is 29. the number of days per year in which emission limits are exceeded is normally distributed with a standard deviation of 4.0 days. what percentage of the years would exceed 37 days?