let the number be x
-8<3x+4<10
-12<3x<10
-4<x<10/3
Answer:
18x = 7.2
x =.4
Step-by-step explanation:
Let x = the weight of one box
We have 18 boxes that weigh 7.2 lbs
Divide each side by 18
18x/18 = 7.2/18