When Mrs. Thompson started teaching, she earned $25000. Every year she gets a $500 raise. The same year, Mr. Thompson started at
the Ford Truck Plant earning $30000. He gets a $300 cost of living
raise every year. In how many years, will Mr. Thompson and Mrs.
Thompson earn the same salary?

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?