4 out of 12 animals were cow if you count 12 more how many will be cows

Need on this geometry question. explain how you did it.

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

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?