The equation will be of the form:

where A is the amount after t hours, and r is the decay constant.
To find the value of r, we plug the given values into the equation, giving:

Rearranging and taking natural logs of both sides, we get:


The required model is:
I am all yours, just reply with the expression.
The answer is 9, hope this helped <3
It could be a box plot or a Histogram
The answer should be B. Hope this helped