Question

Dada a função definida por: f(x) = 2x + 1, calcular:

A) f(0) =
B) f(7) =
C) f(-2) =
D) f(-5) =​

Answer 1

$f(x) = 2x + 1\\\\A) f(0) = 2.0 + 1 = 0 + 1 = 1\\B) f(7) = 2.7. + 1 = 14 + 1 = 15\\C) f(-2) = 2.(-2) + 1 = -4 + 1 = -3\\D) f(-5) = 2.(-5) + 1 = -10 + 1 = -9$

Answer 2

Resposta:

f(0) = 2×0 + 1

f(0) = 1

f(7) = 2×7 + 1

f(7) = 14 + 1

f(7) = 15

f(-2) = 2×(-2) + 1

f(-2) = -4 + 1

f(-2) = -3

f(-5) = 2×(-5) + 1

f(-5) = -10 + 1

f(-5) = -9