Tolong dijawab ya no 2 ☺ Makasih…

F(×) = 1/3x + 5

0 >> f(0) = 1/3(0) +5
= 5

3>> f(3) = 1/3(3) +5
= 6

6>> f(6) = 1/3(6) +5
= 7

9>> f(9) = 1/3(9) +5
= 8

12>> f(12) = 1/3(12) +5
= 9

Rf = {5,6,7,8,9}