Using an exponential function, it is found that the half-life of the substance is of 5.23 units of time.
<h3>What is the exponential function for the amount of a substance?</h3>
The function is given by:

In which:
- A(0) is the initial value.
- k is the exponential decay rate.
The parameters are given by:
A(0) = 48, k = 0.1325.
Hence the equation is:

The half-life is the amount of time for which A(t) = 0.5A(0) = 24, hence:






t = 5.23.
More can be learned about exponential functions at brainly.com/question/25537936
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Answer:
= 
Step-by-step explanation:
The n th term of a geometric sequence is
=

Substitute in values
= 320 × 
= 320 ×
=
=
= 0.625
There would be seventy rows, going to the right. Each row would be 35 high. hope it helped.
Answer:
your answer would be 0.052
Answer:
$2.71
Step-by-step explanation:
19 ÷ 7 = 2.71