Final answer:
The cost of the dryer is $450, which we find by setting up an equation based on the given information and solving for the cost of the dryer.
Step-by-step explanation:
To solve the problem regarding the cost of a washer and a dryer, we need to set up an equation based on the information given. Let's define D as the cost of the dryer. Since the washer costs $56 less than the dryer, the cost of the washer can be represented as D - $56. Combined, their costs equal $844. Therefore, we can write the equation as follows:
D + (D - $56) = $844
Combining like terms, we get:
2D - $56 = $844
Adding $56 to both sides to isolate the term with D we get:
2D = $900
Dividing both sides by 2 to solve for D, we get:
D = $450
Therefore, the cost of the dryer is $450, which corresponds to option (d).