A technician monitoring weather conditions in Anchorage, Alaska, recorded a morning temperature of ${}15$ degrees and a mid-afternoon temperature of ${}-30$ degrees. Which mathematical expression correctly translates the phrase 'the difference of ${}15$ and ${}-30$' to find the temperature swing?

In a cold-weather operations scenario, an Anchorage logistics coordinator needs to find the temperature difference between a morning high of 15 degrees and an afternoon low of -30 degrees. To calculate this difference, the coordinator translates the scenario into the expression ${}15 - (-30)$, which simplifies to ${}15 + 30$ because subtracting a negative number is equivalent to adding a positive one.

A logistics coordinator in Anchorage, Alaska, is monitoring a significant weather shift where the morning temperature of 15 degrees dropped to -30 degrees by mid-afternoon. Arrange the following steps in the correct order to show how to calculate the total temperature difference using the course strategy.

An environmental safety officer at an Anchorage job site records a morning temperature of 15 degrees. By mid-afternoon, the temperature drops to -30 degrees. To calculate the total temperature difference, the officer translates the scenario into the mathematical expression ${}15 - (-30)$, which simplifies to a total change of ____ degrees.

An Anchorage logistics coordinator is tracking extreme temperature shifts for fleet safety. Based on the Anchorage scenario from the course, match each temperature component with its correct mathematical representation.