Answer:
6; 1, 2, 6
12; 1, 2, 3, 4, 6, 12
18; 1, 2, 3, 6, 9, 18
Step-by-step explanation:
20+5 because 5 is 15 less than 25.
f(3)=-5(x+5)
=5(3) +5
=15+5
f(3) =20