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Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 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

We have 339 ounces of jam to be divided up equally for 12 people how muny ounces will each person get