According to the law of one price, identical products should sell for the same price everywhere if Select one: a. consumers have knowledge of the prices charged for products in different markets b. transactions costs are zero. c. firms can prevent consumers from engaging in arbitrage. d. there are no tariffs or other restrictions on imports or exports.

Calculate for the area of the carpet by multiplying the dimensions given.
                       Area = Length x width
                      Area = (15 ft) x (20 ft) = 300 ft²
Then, convert the calculated area to yard² with the conversion factor of 1 yard = 3 ft.
                       (300 ft²) x (1 yard/ 3 ft)² = 33.33 yd²

Then, multiply this area in square yards with the cost per yd².
                        C = (33.33 yd²)($16.95/yd²)
                          C = $565
Lastly, add the installation cost to the calculate initial cost. 
                   total cost = $565 + $250
                    total cost = $815