If f(x) = 4(x + 2), then what will be the value of f(3)?

If f(x) = 4(x + 2), then what will be the value of f(3)?

My answers option is :

a. 20
b. 30
c. 40
d. 10
e. None of the above

please help.
thanks

Default Asked on October 13, 2017 in GMAT.
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1 Answer(s)

    Thanks for your questions. Your questions is
    If f(x) = 4(x + 2), then what will be the value of f(3)?

    Correct answer is: a

    Questions details Explanation:
    According to the data given in the question, f(x) = 4(x + 2)
    We have to find out the value of f(3).
    ∴ Substituting, x=3 in the equation for f(x), we get,
    f(3) = 4(3 + 2)
    ∴ f(3) = 4(5) = 20
    Hence, f(3) = 20
    Hence, the correct answer is option a.

    Hope you are now clear. Ask your questions for more help.

    Silver Answered on October 16, 2017.
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