There are 27 red or blue marbles in the bag. the number of red marbles is 5 less than 3 times of the blue marbles. how many red marbles are in the bag? how many blue marbles are in the bag?

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