4. Each number below was calculated by students completing math problems. Which student rounded appropriately? O Student A calculated 8.4 people.

O Student B calculated 12.4 seconds.

O Student D calculated 53.58339 feet.

O Student C calculated 145.93477569 pounds.

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?