FirstName lastName
input("What is your first name?)
input("What is your last name?)
The user provides their first and last name.
Finish the program
Make the program print a person's first initial and last name.
Example: “Elon Musk" becomes "E. Musk”
You MUST include a period after the first initial just like the example.
6.

Given int variables k and total that have already been declared, use a while loop to compute the sum of the squares of the first 50 counting numbers, and store this value in total. thus your code should put 11 + 22 + 33 + + 4949 + 50*50 into total. use no variables other than k and total.

Which statistical function in a spreadsheet you to see how far each number varies, on average, from the average value of the list?

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)?