What is the missing term? (10x – 4x^2) – (7x + ? ) = 3x – 6x^2 -10x^2 -2x^2 -x^2 2x^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?