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f (3) = 15 and f (5) = 45

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by sanju09 » Fri Jul 23, 2010 4:05 am
If f (3) = 15 and f (5) = 45, which of the following could be f (x)?
A. 4 x + 3
B. 2 x² - 2 x
C. 2 x² - x
D. 2 x² - 5
E. 5 x²

[spoiler]Source: majortests.com[/spoiler]
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by gmatmachoman » Fri Jul 23, 2010 4:08 am
sanju09 wrote:If f (3) = 15 and f (5) = 45, which of the following could be f (x)?
A. 4 x + 3
B. 2 x² - 2 x
C. 2 x² - x
D. 2 x² - 5
E. 5 x²

[spoiler]Source: majortests.com[/spoiler]

Pick C
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by selango » Fri Jul 23, 2010 4:09 am
Pick C
--Anand--
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