amy borrows $130 to buy supplies for her birthday party. she receives gifts and money from her friends and family. the total amount of money that she receives is $250. how much money does amy have after she pays back what she borrowed?

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?