Amy spent $21 on school supplies.
The correct answer is option C, $21.
To determine how much Amy spent on school supplies, we first need to calculate the fraction of her total money that was spent on school supplies. It is given that Amy spent 1/6 of her money on school supplies.
We are also given that Amy spent a total of $126 at the store. So, to find the amount spent on school supplies, we need to find 1/6 of $126.
To calculate 1/6 of a value, we can multiply the value by the fraction 1/6. In this case, we have:
(1/6) x $126 = $21
Therefore, Amy spent $21 on school supplies.
The correct answer is option C, $21. This means that out of the total $126 spent, $21 was allocated to school supplies.
To learn more about multiplication;
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