Q:
Diketahui fungsi f(x) = 3x + 6. Jika f(a) = 18. Nilai a adalah ...
Diketahui fungsi f(x) = 3x + 6. Jika f(a) = 18. Nilai a adalah ...
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Jawab:
f(x) = 3x + 6
f(a) = 18
18 = 3a+6
-3a = 6 - 18
-3a = -12
-a = -4
a = 4
Penjelasan dengan langkah-langkah:
semoga membantu
f ( x ) = 3x + 6
f ( a ) = 18
f ( a ) = 3x + 6 = 18
f ( a ) = 3x = 18 - 6
f ( a ) = 3x = 12
f ( a ) = x = 12/3
f ( a ) = x = 4
f ( a ) = 4
a = 4