Which of the sets of ordered pairs represents a function?
a = {(1, -2). (3.-5), (5,2), (7,5)}
b = {(4,2), (4, -2), (9,3), (9, -3)}

What is the value of x in the diagram below?

Consider 6x2 + 6x + 1. which term immediately tells you that this expression is not a perfect square trinomial? justify your answer

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?