Answer: 12.56
Explanation: 4x3.14
<span>irrational?
I honestly don't know i googled it and it's </span>
<span>irrational</span>
<u>Answer-</u>
<em>The exponential function that satisfies the given conditions is
</em>
<u>Solution-</u>
This can be represented as exponential decreasing function,

Where,
-
a = starting amount = 67
- r = rate = 0.47% = 0.0047
- t = week
Putting the values,


Therefore, the exponential function that satisfies the given conditions is
