1. Suppose the memory address in an embedded system has 12 bits. How many unique memory locations can this 12-bit address access? How many bits this memory space can hold? What about if memory address has 16 bits?

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)?

3. write assignment statements that perform the following operations with the variables a, b, and c: a. adds 2 to a and assigns the result to b b. multiplies b times 4 and assigns the result to a c. divides a by 3.14 and assigns the result to b

Question 1 excel is a tool used to a create a spreadsheet b design a brochure c make a presentation d write a letter question 2 a cell on an excel spreadsheet refers to a a type of document view b a page of the workbook c the rectangular box where a column and row intersect d the data in a worksheet question 3 tanya is entering the amount of money she has earned from babysitting onto an excel spreadsheet, but the autocomplete feature is not working. why? a autocomplete must be turned on before every entry. b autocomplete only works with professional spreadsheets. c autocomplete does not recognize types of currency. d autocomplete only works when the first character is text. question 4 which tab has formatting features to change the font style, color, size, and alignment? a file b home c insert d view question 5 brad uses excel to create a weekly schedule. he wants to keep using the same spreadsheet every year. one of his rows is titled "baseball," but the season has ended until next year. what is the most efficient way to modify the spreadsheet, so brad does not see baseball on his schedule but can easily get it back when the season starts again? a add a new comment with the start date of the next season b hide the row and unhide it when the new season begins c highlight the row in a different color to show the season has ended d start a new spreadsheet