An environmental engineer is monitoring the temperature $x$ (in degrees Celsius) inside a refrigeration unit. The system's safety protocol requires the temperature to satisfy the compound inequality: ${}6x - 3 < 9$ and ${}2x + 9 \geq 3$. Arrange the following steps in the correct order to solve the inequality and express the valid temperature range in interval notation.

A laboratory technician is calibrating a precision sensor. The sensor's valid operating range $x$ is governed by the combined safety conditions: ${}6x - 3 < 9$ and ${}2x + 9 \geq 3$. Which of the following intervals represents the correct solution set for the sensor's operating range?

A quality control technician in a pharmaceutical plant is monitoring the storage temperature $x$ (in degrees Celsius) for a sensitive vaccine. The safety protocol requires the temperature to satisfy the compound inequality: ${}6x - 3 < 9$ and ${}2x + 9 \geq 3$. Match each part of the temperature analysis with its corresponding mathematical representation as established in the vaccine safety report.

A quality control technician is monitoring the pressure $x$ of a pneumatic system. The safety guidelines specify that the pressure must satisfy the conditions ${}6x - 3 < 9$ and ${}2x + 9 \geq 3$, which results in the safe operating interval $[-3, 2)$. True or False: Based on the square bracket used at the first endpoint, a pressure reading of exactly -3 is considered within the safe operating range.

A facilities maintenance technician is documenting the acceptable humidity range for a server room. The required humidity level $x$ is defined by the compound inequality ${}6x - 3 < 9$ and ${}2x + 9 \geq 3$. After simplifying the conditions to $x < 2$ and $x \geq -3$, the technician prepares to graph the overlapping region. To correctly represent that the lower boundary of -3 is included in the solution, the technician must recall to use a ____ at -3 on the number line.