Final answer:
The correct way to solve (x - 9) quarters is by writing it as (x - 9)/4, interpreting 'quarters' as the fraction 1/4 and dividing the quantity (x - 9) by 4.
Step-by-step explanation:
To solve for the expression (x - 9) quarters, you want to interpret 'quarters' as the fraction 1/4. Therefore, you would write the expression as:
(x - 9)/4
This means you are taking the quantity (x - 9) and dividing it by 4. So, the correct answer to how you would write (x - 9) quarters is d) (x - 9)/4.