What should you do if an oncoming car at night approaches with its high-beams on?

a. flash your high-beams quickly at the other driverb. look toward the right edge of your lanec. slow down and look straight ahead

What is outfitting a workplace with video in a technology

What does 21 pilots middle aged name as a band 15 years prior to them naming their band 21 pilots?

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)?