Which graph shows a dilation?

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

Oscar and julie ashton are celebrating their 15th anniversary by having a reception hall. they have budgeted $4,500 for their reception. if the reception hall charges a $90 cleanup fee plus & 36 per person, find the greatest number of people that they may invite and still stay within their budget.