Astudy analyzed the average yearly salt intake in the united states from 2012 thru 2017. the data is summarized in the table:

year annual salt intake
(grams)
2012 3,618
2013 3,646
2014 3,680
2015 3,716
2016 3,751
2017 3,790

the study found that the data after the year 2012 can be modeled by the function f(x) = 41.8x + 3,608, where x is the number of years since 2012 and f(x) is the total amount of salt ingested in grams. describe the significance of 3,608.
the average amount of salt in grams used in 2013
the average amount of salt in grams used in 2012
an estimate of the grams of salt used in 2013
an estimate of the grams of salt used in 2012

If your score on your next statistics test is converted to a z score, which of these z scores would you prefer: minus2.00, minus1.00, 0, 1.00, 2.00? why? a. the z score of 2.00 is most preferable because it is 2.00 standard deviations above the mean and would correspond to the highest of the five different possible test scores. b. the z score of 0 is most preferable because it corresponds to a test score equal to the mean. c. the z score of minus2.00 is most preferable because it is 2.00 standard deviations below the mean and would correspond to the highest of the five different possible test scores. d. the z score of minus1.00 is most preferable because it is 1.00 standard deviation below the mean and would correspond to an above average