A pencil costs $0.50. Write a variable expression for the cost of x pencils. A. 0.40 + x B. 0.50 C. 0.50 • x D. 0.50 - x
Mathematics · Middle School · Sun Jan 24 2021
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Given the statement:
A pencil costs $0.50.
Write a variable expression for the cost of x pencils.
Solution:
The variable to represent the cost of the pencils can be written as,
= 0.50x
where x, represents the number of pencils.
We multiply x with 0.50 since it is the cost of the pencil. By doing this, we can easily determine the total cost of the pencil depending on the number of pencils being bought.
Final answer:
C. 0.50x