tolong dong jawabin!!!

14. A= {1,2,3,4,6.12} , B= {1,2,3,4.5}
A gabungan B = {1,2,3.4.5,6,12}

15 kalo ga salah sih opsi a sm c nya benar

16. f(x) = ax-5
f(-3) = -1
Berarti ax-5 = -1
a(-3)-5 = -1
-3a - 5 = -1
-3a = 4
a = - 4/3
f(2) = ax-5
= - 4/3 (2) - 5
= - 8/3 - 5
= -8/3 -15/3
= -23/3