Melissa buys 2 1/2 pounds of salmon and 1 1/4 pounds of swordfish. she pays a total of $31.25, and the swordfish costs $0.20 per pound less than the salmon. what would be the combined cost of 1 pound of salmon and 1 pound of swordfish?

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?