I need help- I think I just forgot what to do..

One month, a music site observed that 60% of the people who downloaded songs from its site downloaded q sam's latest single. the equation below represents this information, where x represents the total number of people who ddownloaded songs from the site that month: x = 0.6x + 384 how many people who downloaded songs from the site that month downloaded q sam's latest single?

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

For what value of (y) is 3^3/3^y =1/9