If you can answer these fast ill give 50 points! their not hard but i need fast!

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?

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

Answer this question i need as soon as possible