Population Growth The world population reached 7 billion people on October 21, 2011, and was growing at the rate of 1.1% each year. Assuming that the population
continues to grow at the same rate, approximately when will the population reach
8 billion? using python

To remove a header or footer from a document you can open the header and footer and manually delete the content true or false

Use a physical stopwatch to record the length of time it takes to run the program. calculate the difference obtained by calls to the method system.currenttimemillis() just before the start of the algorithm and just after the end of the algorithm. calculate the difference obtained by calls to the method system.currenttimemillis() at the start of the program and at the end of the program so that the elapsed time includes the display of the result. use the value returned by the method system.currenttimemillis() just after the end of the algorithm as the elapsed time.

Write a program that asks the user to enter the name of an input file. if the file does not exist, the program should prompt the user to enter the file name again. if the user types quit in any uppercase/lowercase combinations, then the program should exit without any further output.