Suatu fungsi f (a) = 3x + 2, Jika f ( a ) = 20 maka nilai a adalah *
A.3
B.4
C.6
D.12
tolong bantu pliss![]()
A.3
B.4
C.6
D.12
tolong bantu pliss
f (a) = 3x + 2
f (a) = 20
3x + 2 = 20
3x = 20 - 2
3x = 18
x = 18/3
x = 6 (C)
Jawaban:
a = 6
Penjelasan dengan langkah-langkah:
f(a) = 20
f(a) = 3x + 2
3x + 2 = 20
3x = 20 - 2
3x = 18
x = 18/3
x = 6
karena x = a, maka nilai a = x = 6
