Answer:
Below in bold.
Step-by-step explanation:
Temperature difference = 9.1 - (-10.5)
= 9.2 + 10.5
= 19.7 degrees C.
1 degree C = 9/5 degrees F + 32, so:
C = 5(F - 32) / 9 is the formula to convert F to C.
When F = 98.96:
C = 5(98.96 - 32) / 9
= 5* 66.96/9
= 37.2 degrees C.