Pls help me I'm not that great at math I need help with part B

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

How many 2/5s are in 1 and 1/2 plz someone me right now

What is the solution to the system of equations? y=1.5-3 y=-x