Final answer:
The regular price of the sofa is calculated by dividing the sale price by 0.71 (since the sale is 29% off, thus the sale price is 71% of the regular price). This results in a regular price of $400.00. option (B)
Step-by-step explanation:
The student is asking how to calculate the regular price of a sofa that is currently on sale for 29% off, with the sale price being $284. To find the regular price, we can represent the sale price as 71% (100% - 29% = 71%) of the regular price. This can be expressed in an equation where 0.71 (which is 71% in decimal form) multiplied by the regular price (P) equals $284.
To isolate the regular price, we should divide $284 by 0.71:
Regular Price = $284 / 0.71
Regular Price = $400.00
Therefore, the correct answer is (b) $400.00.