1) Diketahui : f(x) = 2 :f(a) = 128 Hitung nilai a 2) Rumus fungsi = f(x) = 4 - 3 x Tentukan : a) f(5) b) bayangan -6 c) nilai f(2a-1) d) nilai f, jika x = -1 e

Yang 2 ajah bisanya :v
Yang 1 gk ngerti

1) Diketahui :
f(x) = 2
:f(a) = 128
Hitung nilai a = 2^7

2) Rumus fungsi = f(x) = 4 - 3 x
Tentukan :
a) f(5) = 4 -3×5 = -11

b) bayangan -6 = 4 -3×(-6) = 22
c) nilai f(2a-1) = 4 - 3(2a-1) = 7 -6a
d) nilai f, jika x = -1
= 4 -3×(-1) = 7
e) nilai a, jika f(a) = 25
4-3a = 25
-3a = 25-4 = 21
a = 21/-3 = -7