(drinking and driving.) just after eric had his last drink, the alcohol level in his bloodstream was 0.20 (milligram of alcohol per milliliter of blood). the alcohol level a(t) in a person follows the exponential decay law. if the legal driving limit for alcohol level is 0.08, how long should eric wait (after his last drink) before he will legally be able to drive? let k = 0.47. give answer in hours to two decimal places.

The head librarian at the library of congress has asked her assistant for an interval estimate of the mean number of books checked out each day. the assistant provides the following interval estimate: from 740 to 920 books per day. what is an efficient, unbiased point estimate of the number of books checked out each day at the library of congress?

Bella want to know what the students at her school think of her show. which is the best group to survey to find this information a. go to the mall and ask all of the students she recognizes from school b. ask her viewers to call in durning an episode of the show c. get a list of students at her school from the office and use a random number generator to pick 30 of them d. get a list of students at her school from the office and pick the first 30 students on the list

Hannah paid $3.20 for 16 ounces of potato chips. hank paid $3.23 for 17 ounces of potato chips. who paid less per ounces?