What number divided by - 3 gives 12 as the result?

Pls , the question is in the picture!

If x + 10 = 70, what is x? a. 40 b. 50 c. 60 d. 70 e. 80

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?