Answer:
4.A
5.c
Step-by-step explanation:
4.112+x=180
x=180-112=68
A
5.
7x+3x-30=90
10x=90+30
10 x=120
x=12
c
=> Amelia's answer is incorrect
4 and 2
4x4+2x2
16+4=20
It is right I made this in venn diagram . sorry for poor picture quality
[2,∞)