Idon't understand this promblem can you

1-for what value of x is line a parallel to line b 2-for what value of x is line a parallel to line b

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

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