Using the uniform distribution, it is found that the mathematical expression for the probability density function of battery recharging time for this scenario is given by:

, elsewhere.
<h3>What is the uniform probability distribution?</h3>
It is a distribution with two bounds, a and b, in which each outcome is equally as likely.
The probability density function is:

, elsewhere.
In this problem, the actual recharging time required is uniformly distributed between 70 and 110 minutes, hence a = 70, b = 110, and the density function is:

, elsewhere.
More can be learned about the uniform distribution at brainly.com/question/13889040