Final answer:
The interval notation for all values greater than -2.6 but less than or equal to 8.9 is (-2.6, 8.9].
Step-by-step explanation:
Interval notation is a mathematical notation used to represent a set of real numbers within a specified range or interval. It is a concise way of expressing the values that fall between two endpoints. There are different types of intervals, each with its own notation.
To find all values greater than -2.6 but less than or equal to 8.9, we can use interval notation. An interval notation uses brackets and parentheses to indicate whether each value is included or excluded. So, in this case, the interval notation for the given range would be (-2.6, 8.9].