The Constant Of Proportionality is 45.2
2.0x10^-5 or 2.0E-5 —this is because as a small decimal number, you move the decimal to the right five spaces and then add a negative to the decimal to indicate that when you translate back (from scientific notation to 0.00002) you will move the decimal to the left
Answer:
B
Step-by-step explanation:

12,870 dollars. Let me know if you want me to show my work.
The answer to the question is the second option.