Please help Decide whether or not the equation has a circle as it's graph . If it does, give the center and the radius. If it does not describe the graph.

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers

Can some one me with these questions

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?