All numbers must be entered as decimal numbers. Examples include 5000 or 5e3 or 5.0e3. Do not enter numbers with commas as in "5,000", not as fractions as in "3/4", and not in percentages as in "25%". That Canvas may reformat your number with commas is not important. Always use nice round numbers for estimates. One significant digit is often enough. Make the numbers easy to multiple and divide in your head. Three significant digits is way too many. You know a lot from everyday life - learn to use it and trust it. Be sure to use our useful numbers and handy formulas sheet, and our spiral energy diagram. These are in our "Let's Get Started! " section of the course. Submitting this assignment after the due date will result in the automatic late penalty being applied, even if the assignment was previously submitted before the due date. That is, do not re-submit new attempts after the due date. Flag question: Question 1 Question 1 5 pts Estimate the number of people in the world. Flag question: Question 2 Question 2 5 pts Estimate the average time spent running, in minutes per day