7) 64%
8) 54%
9) 4/10, 40%
10) 17.5 miles
11) $10.50
12) $2.04
Answer:
Hope you understand it ^^.
8, 10, 12
Step-by-step explanation:
x+x+2+x+4=30
3x+6=30
3x=30-6
3x=24
x=8
B:42
