Write a real-world word problem that can be solved by adding 1.99 and 2.49

You are constructing a histogram for scores that range from 70 to 100 in whole points. frequencies range from 3 to 10; that is, every whole-point score between 60 and 100 occurs at least 3 times, and at least one score occurs 10 times. which of these would probably be the best range and size for the score intervals along the x-axis?

How do you summarize data in a two-way frequency table?

If abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d?