A library normally collected $54.00 in fees a month. In March they collected $79.92
What is the percent increase in the number of fees collected in March?

What is the standard deviation of the following data set rounded to the nearest tenth? 3, 17, 18, 15, 12, 21, 9

Triangle xyz has vertices x(1,3), y(0,0)

How can the correlation in the scatter plot graph below best be described? positive correlation negative correlation both positive and negative no correlation