You defined the raft class as shown. class raft: def __init__(self, capacity): self. capacity = capacity self. location = 'Gauley' self. repairs = [] The code, raftA = raft(45), creates a(n) of the raft class.

Think about the poem "old ironsides." drag the subject of the poem to the subject box and the theme to the theme box. then decide whether each excerpt from the poem supports the subject or the theme.

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)?

Me dangers of social media and the internetexplain what each means: 1) social media and phones have become an addiction.2) outside people have access to you all the time.3) cyberstalking4) cyberbullying5) catphishing6) viruses7) identity theft8) credit card fraud9) hacking10) money schemes