Answer:
Hope this helps!
Explanation:
The first one; a book about... is problem and solution
The second one (I'm going across the top first); a manual describes how to..
is sequential order
The third one; a recipe on how to.. is also sequential order
The fourth one (going down to the one under #1); an essay about how...
is compare and contrast
The fifth one; an essay about how to... is problem and solution
The sixth one; an essay about the... is compare and contrast