She is scheduled to give her class of 31 students a final test on the last day of test week, and she is leaving town the same day. She is concerned about her ability to finish grading her tests. She estimates that with everything else she has to do she has only 7 hours to grade the tests. From past experience she knows the first test will take her about 12 minutes to grade. She estimates her learning curve to be about 90%, and it will be fully realized after about 10 tests.
How long will it take Professor Cook to grade the 10th test?
How long will it take to grade all 31 tests?
Will she get the tests graded on time?