C) 2x^2 + 3/2x - 5
Just add the two functions.
Step-by-step explanation:

The percentage of the markup was 60%.
What you need to do is divide the fraction then multiply by the reciprocal of that fraction
So it’ll be 9-3x3+1
Then you multiply the numbers
9-9+1
Eliminate both 9’s, therefore the answer will be 1