Question

Use the Distributive Property to find the price of 9 CDs that cost $13.99 each.

Answer 1

To use the distributive property, we "distribute" a value on the outside of a set of parentheses to all of the values on the inside of the parentheses. For example...

6(3 + 9) = 6*3 + 6*9

For your problem, you only have one value 13.99, but we can split it apart to make it a little easier to work with (like with mental math). We can say that 13.99 is the same as 10 + 3.99. Now we can take it and multiply by 9 with the distributive property...

9(10 + 3.99) =
9*10 + 9*3.99 =
90 + 35.91 =

$125.91

Answer 2

The cost of 9 CD's is $125.91.

Explanation:

The distributive property can be described as:

`a(b+c)=ab+ac`

Here given is that the cost of 1 CD is $13.99

We can write this cost as =
`13+0.99`

And the cost of 9 CD's can be calculated as:

`9(13+0.99)`

Further solving this we get

`(9*13)+(9*0.99)`

=
`117+8.91=125.91` dollars

Therefore, the cost of 9 CD's is $125.91.