Asurvey asks "would you like to see more or less government spending on natural disasters? " of the 1496 respondents, 723 responded "more" or "much more". the population of interest consists of
a) the proportion of american adults who would respond "more" or "much more"
b) the 723 respondents who responded "more" or "much more"
c) the 1496 respondents
d) all american adults
e) the proportion of respondents who responded "more" or "much more"

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.