Answer:
Option 1 - ![d=\frac{T-a-b-c}{2}](https://tex.z-dn.net/?f=d%3D%5Cfrac%7BT-a-b-c%7D%7B2%7D)
Step-by-step explanation:
Tisha and her academic team are working to go to state finals. They must have a certain number of points, T, to advance.
Tisha and her academic team have had three local matches a,b and c.
So, the point they need to earn is d=T-a-b-c
District match points count for twice times the number of points than local matches do.
So, the point in district mach is 2d.
The equation that would help Tisha is
![2d=T-a-b-c](https://tex.z-dn.net/?f=2d%3DT-a-b-c)
![d=\frac{T-a-b-c}{2}](https://tex.z-dn.net/?f=d%3D%5Cfrac%7BT-a-b-c%7D%7B2%7D)
Therefore, option 1 is correct.