Digital SAT Math Practice Question #2471
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Desmos / Fast Proportion: Set up equivalent fractions $\frac{a}{b} = \frac{c}{d}$ and cross-multiply in seconds.
$30 \text{ m/s} \times \frac{3600 \text{ s}}{1 \text{ hr}} \times \frac{1 \text{ km}}{1000 \text{ m}} = 30 \times 3.6 = 108$ km/h....
Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...
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