ENTERING INTERVAL ANSWERS For intervals of values, enter your answer using interval notation. Here are some examples of how interval notation relates to inequalities:

Inequality	Interval Notation
3	(3,5)
3	(3,5]
x>3>3	(3,)(3,)
3	(3,5)(7,9)(3,5)(7,9)

With inequalities, we use "less than": < or "greater than": > to exclude the endpoint of the interval. With interval notation, we use use round parentheses, ( or ). With inequalities, we use "less than or equal to": or "greater than or equal to": to include the endpoint of the interval. With interval notation, we use use square brackets, [ or ]. To combine two intervals, use U (an uppercase letter u) for union: Use oo (two lowercase letter o's) for infinity: For example, to enter (,2](3,6](-,-2](3,6], you would type: (-oo,-2]U(3,6] Try it now. Enter the interval equivalent to 272<5or>7