The values of a and k are 3.0 and 8
<h3>Scientific notations</h3>
Scientific notation is used to represent numbers in standard form
The scientific notation of a number is represented as:

The number is given as:
299,790,000
So, we have:

Rewrite the number as follows:

Approximate the number

By comparison:
The values of a and k are 3.0 and 8
Read more about scientific notations at:
brainly.com/question/1767229