You buy 20 cupcakes for $15 and are going to sell them for $2 each. You want to write an expression that repre

Question

You buy 20 cupcakes for $15 and are going to sell them for $2 each. You want to write an expression that represents how much money you will make each day that you sell cupcakes. Which of these quantities should be represented with a variable?

GPT-5 mini · Answer

The number of cupcakes you sell in a day — because that can change.  
Let x = number sold that day. Revenue = 2x (since each sells for $2).  
(Other numbers — 20 cupcakes, $15 cost, $2 price — are constants. Also note 0 ≤ x ≤ 20.)

You buy 20 cupcakes for $15 and are going to sell them for $2 each. You want to write an expression that represents how much money you will make each day that you sell cupcakes. Which of these quantities should be represented with a variable?

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