I would go with d .... If not it would be c...
Really hope I help but I would choose d
It is a reciprocal. Multiplying is the opposite of Dividing, so if I multiply 3 times 4 I get 12. If i divide 12 by 3 I get 4.
10% on first 10k is 1,000
20% on 5k is 1,000
You owe 2,000
Y=8x+3
negative = down
positive= up