Answer: [tex]-8^{\circ}C[/tex]
Step-by-step explanation:
Given
The temperature on Tuesday is [tex]1^{\circ}C[/tex]
Temperature drops to [tex]-2^{\circ}C[/tex] on Wednesday
Net drop in temperature [tex]1-(-2)=3^{\circ}C[/tex]
The temperature drops twice from Wednesday to Thursday
[tex]\Delta T=2\times 3=6^{\circ}C[/tex]
Temperature on Thursday
[tex]\Rightarrow -2-6=-8^{\circ}C[/tex]