PSAT Math Multiple-Choice Question 432: Answer and Explanation
Question: 432
The functions f(x) and g(x) are graphed in the xy-plane above. What is the value of f (-2) - g(2)?
- A. -30
- B. -20
- C. -15
- D. 20
Correct Answer: B
Explanation:
B
Difficulty: Medium
Category: Graphs of Functions
Getting to the Answer: Start by figuring out the y- values needed. On the graph,f (-2) has a value of 5, while g(2) has a value of 25. Therefore, f (-2) - g(2) = 5 - 25 = -20. This matches (B).
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