A local restaurant automatically adds an 18% gratuity to bills for parties of 6 or more. The bill for Sharon and her seven friends came to $215.00. How much will the restaurant add to their bill? A: 0.18
B: 18.00
C: 36.00
D: 38.70

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