Please help me I don’t have time. Answer whichever one. Please I will thank you

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

If the discriminant if a quadratic equation is 4 which statement describes the roots?

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.