The formula A = lw gives the area A of a rectangle with length l and width w. What is the area in square feet of a United States flag with a length of 13 feet and a width of 7 feet?

The area is
square feet.

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?