$354 divided by 12 equal payments equals $29.50 a payment
Answer:
194.5315427 grams
Step-by-step explanation:
The half-life of element x would be 66 years. So, after 20 years you would have:
.5^(20/66) x 240=0.810548 x 240
=194.5315427 grams of the element left ......
1. is B
2. is A
3. is C
4. is B
5. ? what graphs
