Answer:
[tex]d = 9[/tex]
Step-by-step explanation:
Given
[tex]Morning = -7^{\circ}C[/tex]
[tex]Afternoon = 2^{\circ}C[/tex]
Required
What represent the difference
The expression that represents the difference (d) are:
[tex]d = |Morning - Afternoon|[/tex]
Substitute values for Morning and Afternoon
[tex]d = |-7 - 2|[/tex]
[tex]d = |-9|[/tex]
[tex]d = 9[/tex]