Explanation:
1. Temperature difference (in the absence of additional heat input) will tend to decay toward zero in an exponential way. Usually, heat loss is proportional to temperature difference, meeting the conditions for an exponential decay.
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2. The rate of decay of a radioactive substance is generally proportional to the amount of that substance, meeting the conditions for an exponential decay.
Answer:
B
Step-by-step explanation:
The "..." at the end of B tell us that it's a repeating decimal so B is irrational. Of course, you can't use this reasoning for every repeating decimal but in this case it works.
Answer:
it is a 55% decrease
(why do i have to type at least twenty characters, just send the answer omg)
