Answer: The customer pays $1108.08 for the furniture.
Explanation:
1. Determine the selling price of the furniture.
2. Calculate the sales tax.
3. Add the sales tax to the selling price.
Step 1: Determine the Selling Price
The store manager increases the purchase cost by 125%. To find the selling price, we first calculate the increase:
![\[\text{Increase} = \text{Purchase Cost} * \frac{\text{Percentage Increase}}{100}\]\[](https://img.qammunity.org/2024/formulas/mathematics/high-school/19hfjq3liu1ni2e18q3dakj3qyd76sn1h7.png)
![\text{Increase} = \$456.00 * (125)/(100) = \$456.00 * 1.25 = \$570.00\]](https://img.qammunity.org/2024/formulas/mathematics/high-school/rpt1zyrdkxhbl9phz5chchz78cx46yisgf.png)
Now, we add this increase to the original purchase cost to find the selling price:
![\[\text{Selling Price} = \text{Purchase Cost} + \text{Increase}\]\[\text{Selling Price} = \$456.00 + \$570.00 = \$1026.00\]](https://img.qammunity.org/2024/formulas/mathematics/high-school/fpnro4moow3fng2w3qi5amnb4vid22fqxz.png)
Step 2: Calculate the Sales Tax
The customer pays an additional 8% sales tax on the selling price. To find the sales tax, we use:
![\[\text{Sales Tax} = \text{Selling Price} * \frac{\text{Sales Tax Percentage}}{100}\]\[](https://img.qammunity.org/2024/formulas/mathematics/high-school/viju8fo0we27qiixs2qe35gnhfoh0ncavb.png)
![\text{Sales Tax} = \$1026.00 * (8)/(100) = \$1026.00 * 0.08 = \$82.08\]](https://img.qammunity.org/2024/formulas/mathematics/high-school/tff53l36on5q6u9ypkt4vsngs7235d2y0r.png)
Step 3: Add the Sales Tax to the Selling Price
Finally, to find out how much the customer pays in total, we add the sales tax to the selling price:
![\[\text{Total Cost} = \text{Selling Price} + \text{Sales Tax}\]\[\text{Total Cost} = \$1026.00 + \$82.08 = \$1108.08\]](https://img.qammunity.org/2024/formulas/mathematics/high-school/i4bv0sxhv4zm08qaf22eftdogt899tqoo3.png)
The customer pays $1108.08 for the furniture.