Question

Sendo f(x)= 7x - 4, obtenha:
f(-1) e f(x)= 3

Answer 1

f(x) = 7x-4
f(-1) = 7 .(-1) - 4
f(-1) = -7- 4
f(-1) = -11

f(3) = 7.3 -4
f(3) = 21 - 4
f(3) = 17

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