Question

04) Sendo f(x) = 12 - 5x, determine: a) f(3) b) f(10) c) f(- 6) d) f(0)

Answer 1

Resposta:

a) -3;   b) -38;  c) 42;  d) 12.

Explicação passo-a-passo:

a) f(x) = 12 - 5x = f(3) = 12-5(3) = f(3) = 12 - 15 = f(3) = -3;

b) f(x) = 12 - 5x = f(10) = 12-5(10) = f(10) = 12-50 = f(10) = -38;

c) f(x) = 12 - 5x = f(-6) = 12-5(-6) = f(-6) = 12+30 = 42;

d) f(x) = 12-5x = f(0) = 12-5(0) = f(0) = 12-0 = f(0) = 12.