It takes Zach 15 minutes to walk 7 1/2 blocks to the swimming pool. At this rate, how many blocks can he walk in one hour?

The graph shows the distance kerri drives on a trip. what is kerri's speed?

Which of the following points is a solution to the system of equations shown? y - x = -1 x + y = -5

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?