Answer:
$9
Explanation:
First, we need to find 70% of the original price of $30 using the following equation:
[tex]\text{ \$30 }\times70\text{ \% = \$30 }\times\frac{70}{100}=\text{ \$21}[/tex]It means that Emma pays $21 less than the original price. So, she pays:
$30 - $21 = $9
Therefore, the answer is $9
