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At a college, the amount, in dollars, spent on books by a group of students for a semester is approximately normally distributed with a mean of $239 and a standard deviation of $56. About what percentage of the students spent between $127 and $295 that semester?

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?