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Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1

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