Simplify: 5x + 4 + 9x
2 answers:
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Exponential decay formula is :
Where a≠0, b≠1 , b represent growth or decay factor (or rate) and x is any real number.
But if a radioactive isotope decays in half every year which means the decay factor or decay rate is 50% or .
So, the formula for half decay will be:
Where represent c) The rate of isotope decreases.
The answer to the question is d
