Elam is packing his room to move into a new house. a small box can hold 8 books without breaking, while a large box can hold 12 books without breaking. he has at most 160 books to pack and less than 30 boxes total. let s represent the number of small boxes and l represent the number of large boxes.

8s + 12l  <=160

s + l < 30

Step-by-step explanation:

Let s represent the number of small boxes and

l represent the number of large boxes.

A small box can hold 8 books without breaking, so its 8s

while a large box can hold 12 books without breaking, so its 12l

Total of 160 books

So 8s + 12l  <=160

small box + large box is less than 30

So s + l < 30

1. sometimes

2. never true

3. sometimes

step-by-step explanation:

these are pretty self explanatory if you know what supp right and com angles are