Find the volume of a box 9 ft * 6 ft * 4 ft

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?

Find the solution of this system of equation -7x+y=-20 9x-3y=36

Which letters from the table represent like terms? a and b b and c a and d b and d