ANSWER
$3937.50
EXPLANATION
The agent receives a commission of 1.25% of the selling price.
The selling price of the house is $315,000.
To find the amount of her commission, we need to find 1.25% of $315,000.
That is:
[tex]\begin{gathered} A\text{ = }\frac{1.25}{100}\cdot\text{ 315000} \\ \text{A = \$3937.50} \end{gathered}[/tex]She received a commission of $3937.50