At 9am the outside temperature was - 3

f. By noon, the temperature was 12

f. Jorge said that it was getting warmer outside. Is he correct? Explain.

At 9 a. m. it was - 3

by noon, it was 12

Jorge said it was getting warmer outside ... Jorge is correct.

because - 3 is a temperature 3 degrees less then 0 ... and 12 is a temperature 12 degrees more then 0.

so the temperature, from 9 a. m. to noon, rose 15 degrees.