I need help i am confused on what o do here

Write a story that matches with the expression 42x-5 pls hurry

Acircle has a circumference of 7.850 units. what is its radius?

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?