Question

The cost of a DVD (in dollars) can be represented by the expression 18 - d, where d is the discount amount. Use the Distributive Property to write and simplify an expression for the cost of 3 DVDs.

a) 3d - 18
b) 18 - 3d
c) 3(18 - d)
d) 18d - 3

Answer 1

The cost of 3 DVDs with a certain discount can be expressed as 54 - 3d dollars using the distributive property.

Step-by-step explanation:

The cost of one DVD is represented by 18 - d, where d is the discount given. To find the cost of 3 DVDs, we can use the distributive property. The expression for 3 DVDs would be 3(18 - d). This means that we take 3 times the expression that represents the cost of one DVD.

If we distribute the 3, we get:

3(18) - 3(d) = 54 - 3d.

Therefore, the cost of 3 DVDs with a discount of d is 54 - 3d dollars.