<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