Answer:
so lets have 4 domains meaning what x could be 3,6,10,20
Step-by-step explanation:
so you must replace the x's with that number
so x=3
f(3)=2(3)-4 2*3=6 6-4=2 so f(3)=2
y is 6
f(6)=2(6)-4 2*6=12 12-4=8 so f(6)=8
y is 8
x=10
f(10)=2(10)-4 2*10=20 20-4=16 so f(6)=16
y is 16
x=20
f(20)=2*20-4 2*20=40 40-4=36 so f(20)=36
y is 36
