An online media service offers video and music downloads. Each download of a song costs $1.25. Each download of a video costs 4 times as much as the song download. You have a credit of $80. How many songs can you purchase after buying 10 videos?

Which is an equation for the nth terms of the sequence 12,15,18,21

The area of square garden is 300m squared. how long is the diagonal?

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