6y< 18
i don't know how to do this can anybody me i have more to ask so this isn't the only question i got

Until the end of the problem, pretend the "less-than" sign is an equal sign. What you wanna do is solve for y by getting it by itself. You do this by dividing both sides by 6:
y=18

Because both sides were divided by a positive number, you do NOT flip the sign and leave it as it is:
y<18

To solve for y, first divide 18 by 6. Your answer is y

The shelves will hold 270 books in total

If i drew it correctly, then al would also equal 14 in., because the midsegment divides the line ab into 2, equal in length lines.therefore, al = lb