Using an exponential function, it is found that the latest models battery life will be of 841 minutes 7 months from now.
<h3>What is an exponential function?</h3>
An increasing exponential function is modeled by:

In which:
- A(0) is the initial value.
- r is the decay rate, as a decimal.
In this problem, considering that the current battery life is of 684 minutes, and it should increase by 3% each month, the equation for the battery life after t months is given by:

Then, in 7 months, it will be given by:

More can be learned about exponential functions at brainly.com/question/25537936