The table gives the temperature (in ) in five cities at 6 a.m. on the same day. Use the table to answer the questions.
City Temperature
(F°)
Juneau -25
Montreal -15
Springfield 44
Orlando 69
Chicago -9
(a) By noon, the temperature in Chicago had risen by 18 °F.
What was the temperature there at noon?
(b) How much lower was the 6 a.m. temperature in Juneau than in Orlando?