What is the missing number in the synthetic division problem below?

Answer:
D. 7
Step-by-step explanation:
In synthetic division, the first # in the division bracket (2) is dropped, and the number outside the bracket is multiplied with it to find 4. Then, -2 and 4 are added to get 2. Again, 2 x 2=4. 3+4=7.
Simplified version: Drop, multiply, add, multiply, add till you reach the last term.