A man fell asleep studying for his math exam. He woke up at 9:30 p. m. If he slept for 3 hours and 50 minutes, what time did he fall asleep? A. 6:20 p. m.
B. 6:05 p. m.
C. 5:40 p. m.
D. 5:20 p. m.​

Without any equipment, you can see stars that are 2{,}800{,}0002,800,0002, comma, 800, comma, 000 light-years away. by looking through a small telescope, you can see stars that are 3{,}112{,}000{,}0003,112,000,0003, comma, 112, comma, 000, comma, 000 light-years away. approximately how many times as far can you see using a small telescope as without any equipment?