Identify relevant information, ignore distractors, and choose an appropriate operation or representation for a contextual problem.
Choose a useful representation
Problem
Pretzels cost \(\$3~\text{each}\). Organize the total costs for buying \(1,~2,~3,~\text{or}~4\) pretzels so all \(\text{four}~\text{quantity}\text{-}\text{cost}~\text{pairs}\) can be compared at once.
Big Picture
What this problem is really about
Let the comparison need determine the representation: four discrete pretzel quantities and their matching total costs must be visible at the same time. Use the constant per-item rate to calculate each quantity-cost pair, then favor an organizer that aligns every input directly beside its output. That structure makes all four pairs visible without losing their correspondence.
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