The human population doubles approximately every 50 years. if there were 2,500,000 people in 1950, how many people are forecasted to populate the earth in 2100? first complete the equation:
Future amount=2,500,000(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