I think it’s compound interest
It would be a 12.5% increase. First you find her monthly wages: $10.50 x 160 hours= $1680 a month. Her insurance is $210/month. So you need to find what percentage 210 is of 1680. So

. Solve for x by dividing 1680 on both sides and you get 0.125. Multiply by 100 to get the percentage and you get 12.5%. Check your answer by multiplying 1680 x 0.125 and you get 210.
All I can tell u to do is ask them cause i cant see your picture sorry
The answers is B
Explanation is that the slope in answer B the 3 is at the 5
It is divided by 100, not 1000 so the answer would be 2.25