During this same time, the digital print manager tracked the number of visits to the website’s homepage. He found that before launching the new marketing plan, there were 4,800 visits. Over the course of the next 5 weeks, the number of site visits increased by a factor of 1.5 each week.

Write an equation to model the relationship between the number of weeks, x, and the number of site visits, f(x).

Enter the correct answer in the box by replacing the values of a and b.