Answer :
highest number: 8.1
lowest number: -8.4
range = highest number - lowest number
range = 8.1 - (-8.4) = 8.1 + 8.4 = 16.5
lowest number: -8.4
range = highest number - lowest number
range = 8.1 - (-8.4) = 8.1 + 8.4 = 16.5