Jacob receives $15 per week for his allowance. His parents have asked him to put $5 in his savings account and the rest of his allowance is spending money. What is the ratio of the amount of money he saves to the amount of money he can spend?

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