fungsi f didefinisikan sebagai f(x) =3x - b. jika f(2) =-5 maka f(7)...

f(x) = 3x-b
f(2) = 3(2) - b
-5 = 6-b
b = 11
f(x) = 3x-11
f(7) = 3(7)-11
f(7) = 21-11
f(7) = 10