Question

Seja a f(x)=5x + 2/4 , calcule e f(2) + f(4)

Answer 1

f(2) = 5.2+2/4 = 10 + 2/4 = 40+2/4 = 42/4
f(4) = 5.4+2/4 = 20 + 2/4 = 80+2/4 = 82/4

f(2)+f(4) = 42/4+82/4 = 124/4 = 31

Answer 2

 f(x) = 5x + 2/4 , calcule e f(2) + f(4)

f(2) + f(4) = 42/4 + 82/4 ==> 124/4 ==> 31

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 f(2) = 5(2) + 2/4 = 10 + 2/4 ==> (40+2)/4 ==> 42/4
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 f(4) = 5(4) + 2/4 = 20 + 2/4 ==> (80+2)/4 ==> 82/4