Need help with 12 through 14

Solve the equation -9p - 17 =10 a -3 b. 16 c. 18 d -16

The measure of angle 0 is 600 degrees

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?