[Question]: An elevator is on the 9th floor. It goes down 7 floors, then up 3 floors, then up 8 floors. If the elevator is on the top floor, how many floors are there in the building?
[Answer]: From the 9th floor, the elevator went down to the 9 - 7 = 2nd floor. Then went up to the 2 + 3 = 5th floor. Then, went up to the 5 + 8 = 13th floor; hence there are 13 floors in the building.
So the answer is 13.

[Question]: Carla can cook a batch of waffles in 10 minutes and chicken-fried steak in 6 minutes. How long will it take her to cook 3 steaks and a batch of waffles?
[Answer]: First find the total cook time for the steaks: 3 steaks * 6 minutes / steak = 18 minutes. Then add the waffles' cook time to find the total cook time: 18 minutes + 10 minutes = 28 minutes.
So the answer is 28.

[Question]: Flynn watches 30 minutes of tv every night during the weekdays. On the weekends, she watches an additional 2 hours of TV in total. How many hours of tv does she watch in 52 weeks?
[Answer]:
She watches 30 minutes of tv per night, 5 days a week so that's 30 * 5 = 150 minutes of tv. She watches 2 hours of tv on the weekends and 60 minutes are in 1 hour so that's 2 * 60 = 120 minutes of tv. All total she watches 150 + 120 = 270 minutes of tv per week. There are 52 weeks in a year and she watches 270 minutes per week so that's 52 * 270 = 14,040 minutes of tv per year. She watches 14,040 minutes of tv and 60 minutes are in an hour so she watches 14040 / 60 = 234 hours.
So the answer is 234.