Determine whether the equation below has it a one solutions no solutions or an infinite number of solutions afterwards determine two values of x that support your conclusion. -10x=-40

Pls! does anybody know a shortcut for answering these types of questions in the future?

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?

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?