Suatu fungsi a didefinisikan g(x)=21x+9 jika g(a)=177,maka nilai a sama dengan

Jawaban:

g(x)= 21x + 9

g(a) = 177

g(a)= 21 a + 9 = 177

21 a = 177 – 9

21 a = 168

a = 168/21

a = 8