PSAT Math Multiple-Choice Question 146: Answer and Explanation

Question: 146

For the car that was sold after exactly 7 years of ownership, the actual selling price of the car was approximately how much more than the selling price predicted by the line of best fit?

• A. $650
• B. $1,250
• C. $2,150
• D. $3,350

Correct Answer: B

Explanation:

B

The question asks how much more the actual selling price was compared to that predicted by the line of best fit for the car that was sold after it was owned for exactly 7 years. Find 7 on the horizontal axis and trace up to the point and the line of best fit. They lie between two gridlines on the vertical axis. Since each interval is $2,000, the difference must be less than $2,000. Eliminate (C) and (D). Since the difference makes up more than half the interval, the difference must be more than $1,000. Eliminate (A). The correct answer is (B).