What is (-3x) to the fourth in expanded form?

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

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 an equation for the linear function which has slope -10 and x-intercept -7