Graphing $x \geq -3$, $x < 2.5$, and $x \leq -\frac{3}{5}$ and Writing in Interval Notation

A safety officer at a chemical plant specifies that a storage tank's pressure must be at least 15 psi. In the interval notation [15, infinity), what does the square bracket '[' indicate about the value 15?

A logistics coordinator is defining weight limits for cargo shipments using interval notation. Match each symbol used in interval notation with its correct definition regarding the range endpoints.

A technician uses the interval (100, infinity) to describe the temperatures at which a sensor will trigger an alarm. In interval notation, the specific symbol that must always be used next to the infinity symbol is a ____.

A project manager determines that a specific phase of a construction job will take more than 20 days to complete ($d > 20$). In interval notation, this timeframe is correctly recorded as (infty, 20).

A logistics coordinator at a shipping hub is defining a safety rule for 'Standard Cargo' where the weight ($w$) must be less than or equal to 50 pounds ($w \leq 50$). Arrange the following components in the correct order (from left to right) as they would appear in standard interval notation for this weight limit.

Standardizing Quality Control Documentation

Instructional Guide for Interval Notation Symbols

A safety engineer is standardizing the equipment logs for a facility. Match each operational constraint with its correct representation in interval notation.

A financial analyst is documenting a range of potential investment returns that have no lower limit, meaning the values can decrease indefinitely. Which symbol is used in interval notation to represent that a solution set extends without bound towards smaller values (to the left)?

Example: Interpreting and Graphing $x > 3$

Example: Interpreting and Graphing $x \leq 1$

Endpoint Inclusion in Interval Notation