Answer:
9 baseball caps.
Explanation:
He could've bought 10 caps with $120 but instead decided to buy 9. We can find this out because:
120=12x+12
Subtract 12 from both sides
108=12x
Divide both sides by 12
x=9
9 caps
120 - 12 for the 12 dollars given in change = 108
108/12 = 9 caps
Hope this helped and that it is correct!
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