Practice GMAT Questions
- To determine f(-1), we must first know (-1)197 and (-1)248. You should never multiply out lots of numbers.
- Instead, look for a pattern:
- This means (-1)197=-1 since 197 is odd and (-1)248=+1 since 248 is even.
- This pattern simplifies the equation to:
-5(-1) - 8(1) + 1, which equals 5 - 8 + 1, or -2.
Thus, C is the correct answer.
Practice Math Questions
Practice Verbal Questions
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