Answer: Her total bill will be: " $34.50 " .
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Explanation:
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15% = 15/100 = 15 ÷ 100 = 0.15 .
$30 + {0.15 * $30} = $30 + ($4.50) = " $34.50 " .
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Note: "15% of $30 = (0.15 * $30) = $4.50 .
We add the "$4.50" tip to the $30.00 that is spent; to get: " $34.50 " .
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