Jackie used to be on the phone 3 1/2 times as her brother. her parents threatened her to take away the phone, so she cut down to 2/5 of the time she used to be on the phone. how many times as much as her brother is jackie now on the phone?

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