An engineering team is testing different chemical formulations for an emergency cryo-therapy cold pack.
Their initial test results are recorded in the table below.
| Formulation | Initial temperature in °C | Temperature after 5 minutes in °C | Temperature change in °C |
|---|---|---|---|
| Alpha | 22.3 | 41.5 | +19.2 |
| Beta | 22.3 | 14.8 | -7.5 |
| Gamma | 22.3 | 6.8 |
Calculate the temperature change for formulation Gamma.
Include a sign (+++ or −-−) in your answer to show if the temperature change is an increase or a decrease.
