What is the range of the data iready

Yo y do yall have 2 stars that means yall wrong bro

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

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps