In a scientific calculator application, the way you input negative numbers with exponents can change the final result. Match each mathematical expression below to the correct numerical value the calculator would return.

A laboratory technician is entering a calibration formula into a scientific computing tool. The formula requires the evaluation of the expression $-7^2$. According to the standard mathematical order of operations used by such tools, what is the numerical value of this expression?

A quality control technician is entering a calibration formula into a system that uses standard order of operations. The formula includes the term $-7^2$. True or False: In this expression, the base being raised to the second power is $-7$.

An accounting software module is being programmed to evaluate squared values for financial adjustments. Arrange the following steps in the correct order to show how the system simplifies the expression $(-7)^2$ using the standard mathematical order of operations.

Sign Conventions in Technical Calculations