Is anyone here a boy and only boys answer plz only boys

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

Y=21.95x+10 y=22.45x solve by substitution

Use pascal's triangle to find the missing values. x4 - 4xb + 6x2 - ax + 1