Question

Se f(x) = x + 2, o valor de f(1) + f(2) é igual a:

a) 0

b) 2

c) 7

d) 5

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Answer 1

Vamos lá!

$\tt \: f(x) = x + 2 \\ \tt \: f(1) = 1 + 2 \\ \tt \: f(1) = \pink{3}$

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$\tt \: f(x) = x + 2 \\ \tt \: f(2) = 2 + 2 \\ \tt \: f(2) = \pink{4}$

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$\tt \: f(1) + f(2) \\ \tt \: 3 + 4 \\ \tt \: \pink{7}$

C=7

A.tt BHETAALFHA