Determine whether the polynomial is a difference of squares and if it is, factor it.
y2 – 25x + 25
is not a difference of squares
is a difference of squares: (y – 5)2
is a difference of squares: (y – 5)(y + 5)
is a difference of squares: (y + 5)2

Phyllis and chen are saving money to go to a football game. each friend starts with some money and saves a specific amount each week. phyllis made a graph to show the total she has saved at the end of each week. chen wrote an equation to show the total, y, he has saved at the end of each week, x. y = 15x + 15 compare the amount that each friend has when both friends start saving. select the correct answer from the drop-down menu to complete the statement. phyllis starts with $ and chen starts with $

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.