no.16 beserta caranya.. besok dikumpulkan

f(a)= 11-5a
-4= 11-5a
-15=-5a
a= -15/-5=3

f(x) = 11-5x
jika f(a) = -4

maka,
f(a) = 11-5(a)
-4 = 11 - 5a
5a = 11+4
5a = 15
a = 3

jawaban B
semoga membantu
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