Kara has been working on an assignment for 3 hours each day, 7 days a week for 2 weeks. How many minutes has Kara worked on her assignment?

If Kara has worked 3 hours per day for 7 days per week, she has worked 21 hours per week. She did this for 2 weeks, so she has worked 42 hours in the 2 weeks. Since 1 hour is equivalent to 60 minutes so we need to multiply 42 by 60 to get the final answer. \(42 \times 60 = 2520\)