At a seaport, the depth of the water, h metres, at time t hours, during a certain day is given by h=2.5 sin ⁡2π (t−4) /12.4 + 6.2

what is the minimum depth of the water?

9.2 m

5.2 m

8.7 m

7.7 m

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?