Ineed the bottom three answered and i'm sorta stuck on four too. not sure if it's right

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?

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?