What’s 2 +2- 2+ 2- 2+ 2-2 +2

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?