What does this mean??

Which of the following is true of operations within a spreadsheet program’s built-in functions? a. operations within parentheses, then multiplication and division, and then addition and subtraction are computed. b. operations within parentheses, then addition and subtraction, and then multiplication and division are computed. c. multiplication and division, then addition and subtraction, and then operations within parentheses are computed. d. addition and subtraction, then multiplication and division, and then operations within parentheses are computed

When working with a team you should always do the following, except? question 3 options: be dependable and trustworthy be sensitive to others feelings do your fair share critique members of the group

Which of these is most responsible for differences between the twentieth century to the twenty-first century?