Problem: A medical scintist has a 15-gram sample
of l-131 and would like to its half-life, in
days. He also knows that k = 0.0856.
Find the half-life, in days, of l-131 using the
information at the left. Round your answer to
the nearest tenthe
Enter the correct answer.
N = Noekt
DONE
No = 15 grams
2
N = 7.5 grams
DOO
0
K = 0.0856
t = ?

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?