The function of f(x)=7/x-2 is one-to-one

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?

How do i make someone brainliest? (if you answer me, i might be able to make you brainliest! )

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps