Final answer:
Maria's spending on goods is $6 plus the price of goods times quantity, indicating a mistake in the original question. None of the provided options (a), (b), (c), or (d) is correct; the corrected equation should be (S = 6 + G).
Step-by-step explanation:
The student has asked about an equation representing Maria's spending on bandanas and goods given her limited weekly income. With a total income of $9, and having already spent $3 on bandanas, the remaining amount Maria can spend on goods is $9 - $3 which equals $6. Therefore, the amount Maria spends on goods (G) is the remainder of her income after buying bandanas. This situation is best represented by the equation (S = 9 - 3G), as Maria's spending (S) on goods equals $6 plus the price of goods times quantity (3G), where G represents the price of goods. However, since there's an error in the question and none of the provided options correctly represents this spending scenario, we must provide a corrected equation (S = 6 + G).