Instructions 1. notice that variables have been declared for you. 2. write input statements to retrieve a year, a month, and a day from the user. 3.include the print statements to output the following: month/day/year is a valid date. or month/day/year is an invalid date. 4.execute the program entering the following input: month = 5, day = 32 year = 2014 5. execute the program entering the following input: month = 9 day = 21 year = 2002

1. list up to six important assumption required to apply the m/m/s queueing model at barnacle cleaners for evaluating the two alternative presented in this analysis. for each assumption, write 1-2 sentences explaining why it is a valid assumption.

Suppose there is a relation r(a, b, c) with a b+-tree index with search keys (a, b).1. what is the worst-case cost of finding records satisfying 10 < a < 50 using this index, in terms of the number of records n1, retrieved and the height h of the tree? 2. what is the worst-case cost of finding records satisfying 10 < a < 50 and 5 < b < 10 using this index, in terms of the number of records n2 that satisfy this selection, as well as n1 and h defined above? 3. under what conditions on n1 and n2, would the index be an efficient way of finding records satisfying the condition from part (2)?

The more powerful, 60 volt cables and the main power shut-off on an hev are both colored orange.