Answer:
Step-by-step explanation:
How many jumps is it from the decimal point to the position to the right of the 6
The answer to that is 3 jumps. Since the move of the decimal made the number larger than it really is, it will take a negative value to put it back where it belongs.
So A) is the correct answer. It is in scientific notation and if you move the decimal back 3 place you get the number you stared with.
Let C present amount of change
The expression is C = 50 - d
3(b+6) = 3*b + 3*6 = 3b + 18