Question

What is the interval (3,5] in set-builder notation?

{10}
(Type an inequality or a compound inequality.)

Answer 1

Answer: x

The parenthesis on the 3 indicates 3 is excluded from the interval, so we have x > 3, but not equal to 3.

The bracket on the 5 indicates that 5 is included in the interval, so we have x ≤ 5.