How would I write this plural?

What is the simplified expression for 6(2(y+x))

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?

Write the expression in complete factored form. 5n_(c - 3) - n(c - 3) =