Question

The label on the car's antifreeze container claims to protect the car between −30°C and 130°C. To covert Celsius temperature to Fahrenheit temperature, the formula is C equals five ninths times the quantity F minus thirty two.. Write a compound inequality to determine the Fahrenheit temperature range at which the antifreeze protects the car. Negative thirty is greater than five ninths times the quantity F minus thirty two is greater than one hundred thirty. Negative thirty is less than five ninths times the quantity F minus thirty two is less than one hundred thirty. Negative thirty is less than five ninths times the quantity F minus thirty two. Five ninths times the quantity F minus thirty two is less than one hundred thirty.

Answer 1

F=C(9/5)+32

then sub both Celsius values in the formula

F=-30 (9/5)+32

=-22

F=130 (9/5)+32

=266

to the antifreeze protects the car between -22°F and 266°