OK SINCE SOME OF YOU DIDNT GET THE LAST ONE HERES ANOTHER ONE FOR 50 POIINTS AGAIN JUST RESPOND TO THIS WITH SOMETHING RANDOM

If an improvement creates no significant change in a product’s performance, then it is a(n) ? a0 design improvement. (there are no answer choices)

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)?

In cell h5 enter a formula that will calculate the percentage of attendees that went to the altamonte springs job fair in 2018.