Acertain school district has specified 5 different novels and 4 different non-fiction books from which teachers can choose to assemble a summer reading list. each summer reading list must have exactly 3 novels and 2 non-fiction books. how many different summer reading lists are possible?

The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap