PLZ HELP ILL GIVE THE BRAINLIEST TO U

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?

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0