Answer:
each bottle of nail polish costs $4.
Explanation:
Let's use "x" to represent the cost of each bottle of nail polish.
According to the problem, Sophia bought 4 bottles of nail polish and a magazine for $10, which means the cost of the nail polish was (26 - 10) = $16.
So we can set up an equation:
4x = 16
To solve for x, we can divide both sides by 4:
x = 4
Therefore, each bottle of nail polish costs $4.
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