3. A real estate agent made a commission of \( \$ 5400 \) on a house that sold at \( \$ 120,000 \). At this rate, what commission will the agent make on a house that sells for \( \$ 145,000 \) ?

To find the commission on a house selling for \( \$ 145,000 \), we first need to determine the commission rate from the initial sale. The commission rate can be calculated using the formula: \[ \text{Commission Rate} = \frac{\text{Commission}}{\text{House Price}} = \frac{5400}{120000} = 0.045 \text{ or } 4.5\% \] Next, we apply this commission rate to the new house price: \[ \text{New Commission} = \text{House Price} \times \text{Commission Rate} = 145000 \times 0.045 = 6525 \] Thus, the agent will make a commission of \( \$ 6,525 \) on the house that sells for \( \$ 145,000 \).