It’s for my friend question it’s due tomorrow he says so pls answer this ASAP

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

What is the slope of the line shown below?

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart