Get this right will give brainleyest

B.

Step-by-step explanation:

Scientific notation is when a number between 1 and 10 is multiplied by a power of 10.

Therefore, we can straight up eliminate C and D because they are less than 1.

Now, between A and B, it is B because A would give you 380,500,000 instead.

38,050,000 expressed in scientific notation is 3.805 x 10^7

4+3x is the answer

hope you got it