Question

2. The movie shop sells posters for $7, DVDs for $15, and CDs for $9. Write 20 points an algebraic expression to represent the total cost for 2 posters, d DVDs, and c CDs.

Answer 1

According to the information given in the exercise, you know that "d" represents the number DVDs and "c" represents the number of CDs.

Using the information given in the exercise, you know that the cost for "d" DVDs sold can represented as:

`15d`

And the cost of "c" CDs sold can be represented as:

`9c`

You also know that the cost of 2 posters of $7 each, is:

`2(7dollars)=14dollars`

Then, you can identify that the total cost for 2 posters, "d" DVDs and "c" CDs can be found by adding all the costs. Therefore, you can write the following expression to represent this:

`2(7)+15d+9c`

If you simplify it, you get:

`=14+15d+9c`

The answers are: First option and Second option.