HELP ASAP PLEASE a) Work out 4; + 12 b) Work out 4 =
42+ ]
Give your answer as a mixed number in its simplest form.

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?