Answer: 
Step-by-step explanation:
We know that the general form of the exponential decay formula is
, where y is final amount remaining after t time, A is the original amount and r is the rate of decay
Now, the ratio of strontium-90 remaining, p , as a function of years, t , since the nuclear accident. 
Hence, the ratio of remaining since the nuclear accident is 
Answer:
trinomial
Step-by-step explanation:
Given polynomial has three terms, therefore it is a trinomial.
Answer:
There were 12 cranes in class yesterday. For all the cranes, there were a total of 290 centimeters.
Step-by-step explanation:
41-29=12.
29*10=290
Answer: average y = -8 average y =2
ARC : -4
Step-by-step explanation:
Answer:
1/2
Step-by-step explanation:
1/2=10/20