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OpenStudy (anonymous):
Evaluate: f(x) = 2x + 5, if x is 3
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OpenStudy (anonymous):
Plug 3 in for x. 2(3)+5 simplify it.
OpenStudy (the_fizicx99):
f(x) = 2x + 5 f(3) = 2(3) + 5 f(3) = 6 + 5 f(3) = 11
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