Clunker Motors Inc. is recalling all vehicles in its Extravagant line from model years 1999—2002 as well as all vehicles in its Guzzler line from model years 2004—2007. A boolean variable named recalled has been declared. Given a variable modelYear and a String modelName, write a statement that assigns true to recalled if the values of modelYear and modelName match the recall details and assigns false otherwise.

Nims is applicable to all stakeholders with incident related responsibilities. true or false

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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)?