Question 3 Answer & Explanation - SAT Algebra

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algebra

A store sells pens for $1.50 and notebooks for $3. Total sales were $150. Which equation models this situation?

$1.5x + 3y = 150$

$3x + 1.5y = 150$

$y = 1.5x + 150$

$x + y = 150$

Correct Answer: A

Choice A is the correct answer. Standard form for revenue.

Pens: $1.5x$ .
Notebooks: $3y$ .
Total: $150$ .
Equation: $1.5x + 3y = 150$ .

💡 Strategic Tip: Match the price to the item variable.

Choice B is incorrect because prices are swapped. Choice C is incorrect because slope-intercept form implies rate of change. Choice D is incorrect because ignores prices.

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