Answered

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Suppose you plan to sell five trading cards. Three of the cards

will be shipped domestically, and two will be shipped

internationally. The cost of international shipping is $2.50

greater than the cost of domestic shipping.

Write About It!

If you spent $22.50 on shipping, how much is the cost of

domestic shipping? Define a variable, write an equation,

and solve the problem.

Sagot :

Answer: $3.50

Step-by-step explanation:

Let the cost of domestic shipping be x.

Since the cost of international shipping is $2.50 greater than the cost of domestic shipping. This will be:

= x + 2.50

Since we are further told that three of the cards will be shipped domestically, and two will be shipped internationally and that $22.50 will be spent on shipping, this will be express in an equation as:

3x + 2(x + 2.50) = 22.50

3x + 2x + 5.00 = 22.50

5x = 22.50 - 5.00

5x = 17.50

x = 17.50/5

x = $3.50

The cost if domestic shipping is $3.50

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