Jamil always throws loose change into a pencil holder on his desk and he takes it out every 2 weeks. this time it was nickels and dimes. there are 7 times as many dimes as nickels, and value of dimes is $5.85 more than the value of the nickels. how many nickels and dimes does jamil have? (how do i put this in a system of equations)

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?