Actually Welcome to the concept of Radioactive decay.
So the left would be 30 grams.
the answer to your question is 2
Answer:
4.3
Step-by-step explanation:
first round
3.296 is 3.3
0.9785 is 1
3.3 + 1 = 4.3
Your answer is C, (3k+4)(2k-5)