In her math homework, Sarah has to add a column chat with the help of an OpenOffice spreadsheet. Arrange the steps into the correct sequence.

-Choose the chart type and click that option

-choose the data series

-click insert

-choose the data range

-click chart

-click finish and add a legend

-choose the chart elements

NOW IN ORDER THIS IS

1.

2.

3.

4.

5.

6.

7.

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)?