Atarot card reader gets paid $90 for each deck he reads, and his goal is to earn $2340 reading tarot cards this month. if he has already read 3 decks this month, how many more decks must he read in order to reach his goal?

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